{"title":"Spring Sale","description":"","products":[{"product_id":"freewheel-remover-with-guide-pin","title":"Shimano\/SRAM Cassette Lockring Tool with Guide Pin - 1670.7\/4","description":"\u003cp\u003eThe 1670.7\/4 sits between the bare-socket \u003ca href=\"\/products\/shimano-cassette-lock-ring-tool\"\u003e1670.5\/4\u003c\/a\u003e and the integrated-handle \u003ca href=\"\/products\/cassette-remover-with-handle\"\u003e1670.8\/2BI-US\u003c\/a\u003e in the Unior cassette-lockring lineup. It's the same Shimano\/SRAM HG 12-spline socket as the basic tool, with one critical addition: a centering guide pin that anchors the tool against the wheel's quick-release skewer. The handle stays separate; you bring your own ratchet or breaker bar to the back.\u003c\/p\u003e\n\u003cp\u003eThe guide pin is what stops the tool from popping out of the lockring splines under load. On a stuck lockring, the splines take all of the load through a small contact patch; without a pin holding the socket centered, the first hard pull tilts the tool, the splines pop, and the lockring rounds. The guide pin slides through the lockring's central bore and through the wheel's QR skewer, holding the splines in full engagement through the break-free.\u003c\/p\u003e\n\u003cp\u003eThe choice between the 1670.7\/4 and the basic 1670.5\/4 is whether you've got a particularly stuck lockring or a freshly-installed one. For shop bikes serviced annually, the splines stay clean and the 1670.5\/4 works fine. For wheels coming in for the first cassette change after years of weather, the guide pin is the difference between getting the lockring off and rounding the splines.\u003c\/p\u003e\n\u003ch2\u003eHow to use it\u003c\/h2\u003e\n\u003cp\u003eThread the wheel's QR skewer out, slide the 1670.7\/4's guide pin into the lockring bore, and re-thread the skewer through the tool and back into the hub. Snug the QR against the back face of the tool. Hold the cassette still with a chain whip or \u003ca href=\"\/products\/cassette-wrench\"\u003eCassette Wrench\u003c\/a\u003e, then turn the 24 mm wrench flat or 1\/2\" drive counter-clockwise. Loosen the QR a quarter turn each time the lockring breaks free further; the tool can lift back out as the lockring threads out.\u003c\/p\u003e\n\u003cp\u003eFor thru-axle hubs the guide-pin spec is different; the 1670.7\/4 expects a QR-style skewer bore, while thru-axle hubs need the \u003ca href=\"\/products\/12mm-thru-axle-hub-cassette-remover\"\u003e12mm Guide 1670.9\/4\u003c\/a\u003e instead.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eShimano HG cassettes, 7- through 12-speed\u003c\/li\u003e\n\u003cli\u003eSRAM HG cassettes (XD and XDR included; HG lockring pattern)\u003c\/li\u003e\n\u003cli\u003eMicroshift and Sunrace cassettes using the Shimano HG lockring pattern\u003c\/li\u003e\n\u003cli\u003eQR-skewered hubs only; not for 12 mm thru-axle (use \u003ca href=\"\/products\/12mm-thru-axle-hub-cassette-remover\"\u003e1670.9\/4\u003c\/a\u003e)\u003c\/li\u003e\n\u003cli\u003eNot for Campagnolo (use \u003ca href=\"\/products\/campagnolo-cassette-remover\"\u003e1670.4\/4\u003c\/a\u003e)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e12-spline Shimano\/SRAM HG lockring pattern\u003c\/li\u003e\n\u003cli\u003eCentering guide pin for QR-skewered hubs\u003c\/li\u003e\n\u003cli\u003e24 mm hex wrench flat\u003c\/li\u003e\n\u003cli\u003e1\/2\" square drive socket on the opposite face\u003c\/li\u003e\n\u003cli\u003eTrivalent chrome plated to ISO 1456:2009\u003c\/li\u003e\n\u003cli\u003eArticle number: 1670.7\/4\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt in Zreče, Slovenia\u003c\/h2\u003e\n\u003cp\u003eUnior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The 1670.7\/4 is the middle tool in a three-step lineup, and the design call is deliberate: workshops doing cassette work daily get the integrated-handle 1670.8\/2BI-US, workshops doing it monthly get the 1670.7\/4 with their existing ratchet, and the bench tool 1670.5\/4 covers the once-a-season service for clean lockrings.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eThe guide-pin trick; snugging the QR against the tool's back face; does the same work as our \u003ca href=\"\/products\/cassette-remover-with-handle\"\u003eintegrated-handle version's\u003c\/a\u003e anchor. The 1670.7\/4 just gives you the choice of which ratchet to use; if your ratchet has a longer arm than our integrated handle, you'll out-leverage the integrated tool. Most workshops have a 250 mm or longer 1\/2\" breaker bar in the drawer already. The cassette-replacement workflow covers when the leverage difference matters and when it doesn't: \u003ca href=\"\/blogs\/tech-tips\/when-and-how-to-replace-your-cassette\"\u003eWhen and how to replace your cassette →\u003c\/a\u003e\u003c\/p\u003e","brand":"Unior","offers":[{"title":"Default Title","offer_id":34378793975852,"sku":"616067","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/1670.7_4.jpg?v=1642729098"},{"product_id":"cassette-remover-with-handle","title":"Integrated Cassette Lockring Wrench w\/Guide - 1670.8\/2BI-US","description":"\u003cp\u003eA worn Shimano or SRAM cassette lockring can be properly stuck. Forty Nm of factory torque plus a season of corrosion plus a freehub that's been hosed off and dried in dirt adds up to a lockring that doesn't move on the first push. The 1670.8\/2BI-US is the cassette-removal tool that doesn't make you build a stack of adapters to break it free: a Shimano\/SRAM-pattern 12-spline socket, a centering guide pin, and a long bi-material handle, all in one piece.\u003c\/p\u003e\n\u003cp\u003eThe guide pin is the design choice that does the work. A bare lockring socket without a centering pin sits in the splines under load and wants to walk; the first hard pull and it's popped out, with rounded spline corners as the parting gift. The guide pin slides through the lockring's central bore and through the wheel's quick-release skewer hole, anchoring the tool against the wheel itself. The splines stay seated through the break-free, no matter how stuck the lockring is.\u003c\/p\u003e\n\u003cp\u003eThe bi-material handle is the leverage half of the equation. Tools designed to be paired with a ratchet are sized for the ratchet's leverage, not the lockring's resistance; an integrated handle solves the leverage problem at the source. The 1670.8\/2BI-US's handle is long enough that a hand at the end of it puts the lockring well past the torque it was installed at. The bi-material grip stays grippy under the hand pressure that those torque values require.\u003c\/p\u003e\n\u003ch2\u003eHow to use it\u003c\/h2\u003e\n\u003cp\u003eSlide the guide pin into the lockring's bore and through the wheel's QR or thru-axle channel. Snug the QR or axle nut against the back face of the tool; this stops the tool from popping out under load. Hold the cassette still with a chain whip or \u003ca href=\"\/products\/cassette-wrench\"\u003eCassette Wrench\u003c\/a\u003e on the larger cogs. Pull the handle counter-clockwise. The break-free is usually one firm motion. Loosen the QR or axle a quarter turn each time the lockring breaks free further and the tool wants to lift, and you'll thread the lockring all the way out without resetting your stance.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eShimano HG cassettes, 7- through 12-speed\u003c\/li\u003e\n\u003cli\u003eSRAM HG cassettes including XD and XDR (lockring pattern matches HG)\u003c\/li\u003e\n\u003cli\u003eMicroshift and Sunrace cassettes using the Shimano HG lockring pattern\u003c\/li\u003e\n\u003cli\u003eNot for Campagnolo (use \u003ca href=\"\/products\/campagnolo-cassette-remover\"\u003e1670.4\/4\u003c\/a\u003e)\u003c\/li\u003e\n\u003cli\u003eNot for thru-axle hubs without a removable axle (the guide pin needs the bore)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e12-spline Shimano\/SRAM HG lockring pattern\u003c\/li\u003e\n\u003cli\u003eCentering guide pin (slides through the cassette lockring bore)\u003c\/li\u003e\n\u003cli\u003eIntegrated bi-material handle\u003c\/li\u003e\n\u003cli\u003eTrivalent chrome plated to ISO 1456:2009\u003c\/li\u003e\n\u003cli\u003eArticle number: 1670.8\/2BI-US\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt in Zreče, Slovenia\u003c\/h2\u003e\n\u003cp\u003eUnior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The 1670.8\/2BI-US is the highest-leverage integrated-format cassette tool in the catalog; the design call is that the workshop should not have to assemble a stack of three pieces; socket plus ratchet plus guide adapter; when one tool can do the same job. The handle's bi-material grip is a small detail, but it's the difference between a tool that works and a tool that hurts your hand under the force a stuck lockring takes to move.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eReinstall is the half of the job that gets done wrong. The same guide pin that protected the splines on removal protects them on reinstall; leave the tool seated through threading until the lockring touches down on the freehub, then back off and torque to spec with a wrench on the 1670.8's handle. Shimano publishes 40 Nm for HG cassette lockrings; SRAM publishes 35–45 Nm depending on cassette tier. The cassette-replacement workflow has the torque values per drivetrain and what happens when you skip them: \u003ca href=\"\/blogs\/tech-tips\/when-and-how-to-replace-your-cassette\"\u003eWhen and how to replace your cassette →\u003c\/a\u003e\u003c\/p\u003e","brand":"Unior","offers":[{"title":"Default Title","offer_id":34378794041388,"sku":"624932","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/1670.8_2bi-us.jpg?v=1642725496"},{"product_id":"12mm-thru-axle-hub-cassette-remover","title":"Cassette Lockring Tool with 12mm Guide - 1670.9\/4","description":"\u003cp\u003eThru-axle hubs solved the quick-release stiffness problem and brought a new one with them: cassette removal got harder. A bare lockring tool slips out of the splines under load, and the old quick-release-skewer trick; running the QR back through the tool to anchor it; doesn't work on a hub that doesn't take a QR. The 1670.9\/4 is the lockring tool sized for the way modern hubs are built: a Shimano\/SRAM HG-pattern socket with a 12 mm centering guide that locates against the thru-axle bore itself.\u003c\/p\u003e\n\u003cp\u003eThe guide is the spec. Most current MTB hubs run 12 mm thru-axles, and most current road, gravel, adventure, and CX hubs do too. The 12 mm guide pin slides directly into the hub's thru-axle channel, planting the tool against the wheel without an external axle or skewer holding it down. The splines stay seated through the lockring break-free, the tool can't walk out under load, and the cassette comes off without rounding the lockring's engagement.\u003c\/p\u003e\n\u003cp\u003eFor QR-skewered hubs, the \u003ca href=\"\/products\/shimano-cassette-lock-ring-tool\"\u003eShimano\/SRAM Cassette Lockring Tool 1670.5\/4\u003c\/a\u003e covers the same lockring pattern at a lower price point; that tool relies on the QR skewer for retention. The 1670.9\/4 is specifically the version for the thru-axle hub population.\u003c\/p\u003e\n\u003ch2\u003eHow to use it\u003c\/h2\u003e\n\u003cp\u003eRemove the wheel and thread out the thru-axle if it's still in the hub. Slide the 1670.9\/4's 12 mm guide pin into the hub's thru-axle bore from the cassette side, seating the 12-spline socket into the lockring. Hold the cassette still with a chain whip or \u003ca href=\"\/products\/cassette-wrench\"\u003eCassette Wrench\u003c\/a\u003e on the larger cogs. With a 24 mm wrench or 1\/2\" ratchet on the back of the tool, turn the lockring counter-clockwise. The guide pin stays in the bore through the full extraction; reverse the steps to reinstall and torque the lockring to spec.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eShimano HG cassettes, 7- through 12-speed\u003c\/li\u003e\n\u003cli\u003eSRAM HG cassettes (XD and XDR included)\u003c\/li\u003e\n\u003cli\u003eMicroshift and Sunrace cassettes using the Shimano HG lockring pattern\u003c\/li\u003e\n\u003cli\u003e12 mm thru-axle hubs (the 12 mm guide is the spec; won't seat in 15 mm or 20 mm hubs)\u003c\/li\u003e\n\u003cli\u003eNot for Campagnolo (use \u003ca href=\"\/products\/campagnolo-cassette-remover\"\u003e1670.4\/4\u003c\/a\u003e)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e12-spline Shimano\/SRAM HG lockring pattern\u003c\/li\u003e\n\u003cli\u003e12 mm centering guide for thru-axle hubs\u003c\/li\u003e\n\u003cli\u003e24 mm hex wrench flat\u003c\/li\u003e\n\u003cli\u003e1\/2\" square drive socket on the opposite face\u003c\/li\u003e\n\u003cli\u003eTrivalent chrome plated to ISO 1456:2009\u003c\/li\u003e\n\u003cli\u003eArticle number: 1670.9\/4\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt in Zreče, Slovenia\u003c\/h2\u003e\n\u003cp\u003eUnior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The 1670.9\/4's design choice; sizing the guide pin to the thru-axle standard rather than to the lockring's central bore; is what makes it work without a removable axle. A few cassette tools on the market still expect a QR skewer to do the retention work, which leaves them awkward to use on the bikes most workshops see now. The 1670.9\/4 is built for the bikes coming in this season, not last decade's.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eThe 12 mm guide doesn't replace the chain whip; you still need something holding the cassette while the lockring turns. The \u003ca href=\"\/products\/1660-2dp-us-multispeed-chainwhip\"\u003eMultispeed Chainwhip 1660\/2DP-US\u003c\/a\u003e is the workshop default; the \u003ca href=\"\/products\/cassette-wrench\"\u003eCassette Wrench\u003c\/a\u003e (11\/12t) is the chain-free alternative when you've got cassettes with the right small-cog size. For SRAM AXS X-Range cassettes with 10-tooth small cogs, neither chain whip nor 11\/12t wrench fits; you need the X-Range-specific wrench. The cassette-replacement workflow details tool pairing per drivetrain: \u003ca href=\"\/blogs\/tech-tips\/when-and-how-to-replace-your-cassette\"\u003eWhen and how to replace your cassette →\u003c\/a\u003e\u003c\/p\u003e","brand":"Unior","offers":[{"title":"Single","offer_id":34378794139692,"sku":"625615","price":16.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/1670.9_4.jpg?v=1642722311"},{"product_id":"shimano-cassette-lock-ring-tool","title":"Shimano\/SRAM Cassette Lockring Tool - 1670.5\/4","description":"\u003cp\u003eThe 1670.5\/4 is the basic Shimano\/SRAM cassette lockring tool: the 12-spline socket that engages every HG-pattern cassette lockring in current production, sized to a 24 mm wrench flat and a 1\/2\" ratchet socket on the back end. It's the bench version of the cassette-removal tool, the one that lives in the same drawer as your ratchet and breaker bar.\u003c\/p\u003e\n\u003cp\u003eThe HG (Hyperglide) lockring pattern is the dominant freehub-mount standard. Shimano and SRAM share it across 7- through 12-speed road and MTB cassettes, including SRAM XD and XDR cassettes for 11- and 12-speed (the XD body uses an HG-pattern lockring even though the cassette interface is different). The 1670.5\/4 fits any of them. The Campagnolo splined pattern is different and needs the 1670.4\/4 instead.\u003c\/p\u003e\n\u003ch2\u003eHow to use it\u003c\/h2\u003e\n\u003cp\u003eSeat the splined end into the lockring, register the 24 mm wrench flat or the 1\/2\" drive against your tool of choice, hold the cassette still with a chain whip or cassette wrench on one of the larger cogs, and turn the lockring counter-clockwise. Cassette lockrings are torqued to 40 Nm new from Shimano, 35–45 Nm from SRAM; expect a firm break-free on the first turn even if the wheel has only been ridden a season.\u003c\/p\u003e\n\u003cp\u003eIf the lockring tool wants to skip out of the splines under load, that's the case for the \u003ca href=\"\/products\/freewheel-remover-with-guide-pin\"\u003ecassette lockring tool with guide pin 1670.7\/4\u003c\/a\u003e or the \u003ca href=\"\/products\/cassette-remover-with-handle\"\u003eintegrated handle version 1670.8\/2BI-US\u003c\/a\u003e instead. The 1670.5\/4 is the right pick when you're already set up with a ratchet and you want the smallest, simplest tool on the bench that gets the job done.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eShimano HG cassettes, 7- through 12-speed\u003c\/li\u003e\n\u003cli\u003eSRAM HG cassettes (XD and XDR included; the lockring pattern matches)\u003c\/li\u003e\n\u003cli\u003eMicroshift and Sunrace cassettes using the Shimano HG lockring pattern\u003c\/li\u003e\n\u003cli\u003eNot for Campagnolo (use 1670.4\/4) or freewheels (use the 1670 freewheel-remover series)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e12-spline Shimano\/SRAM HG lockring pattern\u003c\/li\u003e\n\u003cli\u003e24 mm hex wrench flat for an adjustable wrench or torque wrench\u003c\/li\u003e\n\u003cli\u003e1\/2\" square drive socket on the opposite face for a 1\/2\" ratchet or breaker bar\u003c\/li\u003e\n\u003cli\u003eTrivalent chrome plated to ISO 1456:2009\u003c\/li\u003e\n\u003cli\u003eArticle number: 1670.5\/4\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt in Zreče, Slovenia\u003c\/h2\u003e\n\u003cp\u003eUnior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The 1670.5\/4 is the unadorned version of a tool the same metalwork makes in two other formats; guide-pin (1670.7\/4) and integrated-handle (1670.8\/2BI-US). All three start from the same splined socket; the choice is about how much help you need on the way to the lockring.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eThe 1670.5\/4 is the right tool for a clean cassette swap, but the 24 mm wrench flat is the trap. A 24 mm wrench is wide enough that you can run out of swing room behind the dropout on some thru-axle frames before the lockring breaks free. A 1\/2\" ratchet stack with a short extension gives you the swing arc back without losing engagement. The cassette-replacement workflow has more on which Unior lockring variant fits which hub: \u003ca href=\"\/blogs\/tech-tips\/when-and-how-to-replace-your-cassette\"\u003eWhen and how to replace your cassette →\u003c\/a\u003e\u003c\/p\u003e","brand":"Unior","offers":[{"title":"Default Title","offer_id":34378794172460,"sku":"616065","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/1670.5_4.jpg?v=1642729049"},{"product_id":"screw-type-chain-tool-basic","title":"Chain Tool - 1647HOBBY\/4P","description":"\u003cp\u003eNot every chain break needs a workshop tool. A home mechanic who replaces a chain twice a year, on a single bike, on a known drivetrain, doesn't need the modular insert system or the workshop-grade body. They need a chain tool that fits in a drawer, drives a pin cleanly when called on, and costs a fair price. The Chain Tool 1647HOBBY\/4P is that tool.\u003c\/p\u003e\n\u003cp\u003eWhat it shares with our workshop tools is the part that matters: the same 3.4 mm driving pin gauge as the Pro Chain Tool, in a smaller body. The spindle tightens the same way, the chain plate sits in the support the same way, the pin advances on-axis. What it doesn't share is the heavy-duty handle, the larger frame, or the spec range; this is corporate's deliberate home-user tool, slotted below the Pro and the Master.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eDesigned for 5- through 11-speed derailleur chains. That covers most home-shop drivetrains in service today: vintage road, mountain bikes through 11-speed, gravel bikes up through Shimano GRX 11 and SRAM Force 22. It does not support SRAM AXS flat-top chains, Campagnolo 11\/12\/13-speed peening, or 1\/8″ singlespeed chains. For any of those, the \u003ca href=\"\/products\/master-chain-tool\"\u003eMaster Chain Tool 1647\/2BBI\u003c\/a\u003e is the right pick.\u003c\/p\u003e\n\u003cp\u003eThe driving pin on this tool is not replaceable; the spindle and pin are a single assembly designed for the use cycle of a home mechanic rather than the daily chain-breaks of a shop bench. If you find yourself wishing the pin came out, you've outgrown the tool, and the \u003ca href=\"\/products\/pro-chain-tool\"\u003ePro Chain Tool 1647\/2ABI\u003c\/a\u003e is the next step.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e5-11 speed derailleur chains\u003c\/li\u003e\n\u003cli\u003e92 × 19.6 × 51 mm\u003c\/li\u003e\n\u003cli\u003e120 g\u003c\/li\u003e\n\u003cli\u003ePin diameter: 3.4 mm\u003c\/li\u003e\n\u003cli\u003eComfortable dipped handles\u003c\/li\u003e\n\u003cli\u003eArticle number: 1647HOBBY\/4P-US\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt in Zreče, Slovenia\u003c\/h2\u003e\n\u003cp\u003eUnior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The Hobby Chain Tool is the same engineering tradition applied at a smaller scale and a lower price point; the spindle threads and the driving-pin geometry come from the same workshop lineage as the Pro, but the body is sized for the toolbox of a home mechanic rather than the bench of a shop.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eThe first time you break a chain, the spindle does most of the work; the harder part is everything around it. Knowing when to break the chain (small-small on the bike, or off the drivetrain entirely on a bench), choosing the right link to break it at (avoid the master-link site if the chain has one), and where to leave a few millimeters of pin engaged for the reinstall. Our chain-replacement guide breaks down those calls and the differences between master-link and pin-pressed reinstalls: \u003ca href=\"\/blogs\/tech-tips\/when-and-how-to-replace-your-chain\"\u003eWhen and how to replace your chain →\u003c\/a\u003e\u003c\/p\u003e","brand":"Unior","offers":[{"title":"Default Title","offer_id":34378795122732,"sku":"624901","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/1647hobby_4p-us.jpg?v=1642722573"},{"product_id":"pro-chain-tool","title":"Professional Chain Tool - 1647\/2ABI-US","description":"\u003cp\u003eA chain tool that doesn't draw attention to itself is the kind a shop keeps using. The Pro Chain Tool 1647\/2ABI is the workshop screw-type that does the job and gets put away clean. No modular inserts, no system to learn; the chain plate sits in the support, the spindle tightens, the pin drives. That's the whole tool.\u003c\/p\u003e\n\u003cp\u003eWhat the spindle does is what matters. Turn the handle, the pin advances against the chain pin, the chain pin moves through the outer plate. The Pro Chain Tool's spindle is precisely-made, so the pin advances on-axis through the entire stroke; off-center pin pushes are the most common chain-break failure, and the geometry of this tool keeps them from happening. The handle is heavy-duty double-component with grip texture that survives oily hands.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe 1647\/2ABI covers most modern derailleur chains and also supports Campagnolo 11-speed. It does not support SRAM AXS flat-top chains; the flat-top plate geometry needs the dedicated insert that ships with the \u003ca href=\"\/products\/master-chain-tool\"\u003eMaster Chain Tool\u003c\/a\u003e. For shops that service modern SRAM AXS bikes, the Master is the right pick; for shops that don't, the Pro Chain Tool is the cleaner tool to keep on the bench.\u003c\/p\u003e\n\u003cp\u003eThe driving pin is replaceable. Under normal use it'll outlast most home toolkits, but for benches that break chains daily we stock the matching \u003ca href=\"\/products\/chain-tool-pins\"\u003eReplacement Chain Tool Pins 1647.1\/4A\u003c\/a\u003e as a two-pack.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMost 6-12 speed derailleur chains; also supports Campagnolo 11-speed\u003c\/li\u003e\n\u003cli\u003e150 × 22 × 72 mm\u003c\/li\u003e\n\u003cli\u003e175 g\u003c\/li\u003e\n\u003cli\u003ePin diameter: 3.4 mm\u003c\/li\u003e\n\u003cli\u003eMaterial: premium flex plus carbon steel\u003c\/li\u003e\n\u003cli\u003eSurface finish: trivalent chrome plated\u003c\/li\u003e\n\u003cli\u003eArticle number: 1647\/2ABI-US\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e SRAM AXS flat-top chains require the dedicated AXS support that ships with the Master Chain Tool 1647\/2BBI; the 1647\/2ABI does not include that insert.\u003c\/p\u003e\n\u003ch2\u003eBuilt in Zreče, Slovenia\u003c\/h2\u003e\n\u003cp\u003eUnior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The Pro Chain Tool's premium flex plus carbon steel body and trivalent chrome plating are workshop-grade choices; the same finish that survives years of chain grease, brake dust, and the occasional bench coffee.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eThe pin drive itself is the easy part. The reinstall is where most chain breaks go wrong; getting the master link in the right way around, choosing peening over a quick-link for a Campagnolo chain, knowing whether a SRAM PowerLock is reusable on the chain you just pulled. Our chain-replacement guide maps those decisions and the routing details that make the difference between a clean swap and a chain that skips on the first ride: \u003ca href=\"\/blogs\/tech-tips\/when-and-how-to-replace-your-chain\"\u003eWhen and how to replace your chain →\u003c\/a\u003e\u003c\/p\u003e","brand":"Unior","offers":[{"title":"Default Title","offer_id":34378795155500,"sku":"624900","price":49.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/1647_2abi-us.jpg?v=1642727977"},{"product_id":"chain-checker-for-professional-use","title":"Professional Chain Wear Indicator - 1643\/4","description":"\u003cp\u003eThere's a moment in a chain's life when the readout matters more than the binary. You want to see whether you're at 0.4% or 0.55%, not just whether the chain has crossed a threshold; you're planning the next service interval, not making a single keep-or-replace call. The Professional Chain Wear Indicator 1643\/4 is the tool for that moment. It's a swing-arm dial gauge with a continuous 0 to 1.2% readout, so the chain doesn't just pass or fail; you get the actual elongation number.\u003c\/p\u003e\n\u003cp\u003eThe mechanism is simple. Two pins drop into the chain, the swing-arm is pressed tight, and the gauge window reports the wear figure. No batteries, no calibration ritual; the indicator is set at the factory and stays set for the life of the tool.\u003c\/p\u003e\n\u003ch2\u003eHow to read it\u003c\/h2\u003e\n\u003cp\u003eThe 1643\/4 reads the chain against a single replacement trigger at \u003cstrong\u003e0.6% stretch\u003c\/strong\u003e. That's the threshold most chain manufacturers historically cited as the universal swap point, and the gauge was designed around it; the dial gives you a continuous reading from 0 up through 1.2% so you can track wear progression over service visits.\u003c\/p\u003e\n\u003ch2\u003eWhen this is the right call\u003c\/h2\u003e\n\u003cp\u003eModern 11-, 12-, and 13-speed chains tighten the spec. Current chain-maker guidance is to swap a narrow-spaced chain at or before \u003cstrong\u003e0.5%\u003c\/strong\u003e, where the 1643\/4's gauge triggers replacement slightly later (0.6%). On those drivetrains, the \u003ca href=\"\/products\/chain-wear-indicator-1644-6\"\u003eChain Wear Indicator 1644\/6\u003c\/a\u003e reads both 0.5% and 0.75% directly on the tool body and is the more accurate pick.\u003c\/p\u003e\n\u003cp\u003eThe 1643\/4 stays useful where a continuous reading matters more than a tighter threshold: 6- through 10-speed drivetrains, shop benches that service mixed-fleet bikes, mechanics who want to log wear progression across service visits rather than just confirm a swap moment. It's the gauge for “how worn is this chain right now,” not the gauge for “should I replace this 12-speed today.”\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e137 × 25.5 × 20 mm (overall length 142 mm)\u003c\/li\u003e\n\u003cli\u003e142 g\u003c\/li\u003e\n\u003cli\u003eSwing-arm dial gauge, 0 to 1.2% range\u003c\/li\u003e\n\u003cli\u003e0.6% replacement trigger\u003c\/li\u003e\n\u003cli\u003eLifetime warranty\u003c\/li\u003e\n\u003cli\u003eArticle number: 1643\/4\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt in Zreče, Slovenia\u003c\/h2\u003e\n\u003cp\u003eUnior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The 1643\/4 is one of the older chain-wear tools in the catalog, and the gauge it carries reflects the chain-wear consensus of an earlier generation of drivetrains. The dial mechanism itself is still the cleanest way to read elongation as a continuous value; you can watch a chain age, not just confirm when it's gone.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eReading the dial is the easy part. Knowing when to act on it is where the call gets made. Our chain-replacement guide lays out what happens to the cassette teeth between 0.5% and 0.75%, why a worn chain on a new cassette is the most common drivetrain mistake, and how to plan service intervals around the gauge rather than around mileage estimates: \u003ca href=\"\/blogs\/tech-tips\/when-and-how-to-replace-your-chain\"\u003eWhen and how to replace your chain →\u003c\/a\u003e\u003c\/p\u003e","brand":"Unior","offers":[{"title":"Default Title","offer_id":34378795384876,"sku":"617170","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/1643_4.jpg?v=1642728010"},{"product_id":"chain-wear-indicator","title":"Manual Chain Wear Indicator - 1644\/2","description":"\u003cp\u003eA go\/no-go gauge gives one answer: it fits, or it doesn't. The Manual Chain Wear Indicator 1644\/2 is the cycling version of that workshop standard. Drop it across two links of a chain, push down, and the chain either holds it or lets it drop. Holds it, the chain is still inside service tolerance. Drops, the chain needs replacing.\u003c\/p\u003e\n\u003cp\u003eThere's no dial, no electronic reading, no calibration to wonder about. The 1644\/2 is a flat piece of laser-cut steel with two reference faces, each cut to a published tolerance. It's the simplest answer to “is this chain done.”\u003c\/p\u003e\n\u003ch2\u003eHow to read it\u003c\/h2\u003e\n\u003cp\u003eTwo zones are stamped on the tool:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e0 to 0.6%\u003c\/strong\u003e is the no-wear side. If the gauge sits without dropping in on this end, the chain is still inside its service window.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.7% to 1.2%\u003c\/strong\u003e is the wear side. If the gauge drops in here, the chain is past replacement and the cassette teeth are next in line.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe decision is binary. There's no in-between reading to second-guess.\u003c\/p\u003e\n\u003ch2\u003eWhen this is the right call\u003c\/h2\u003e\n\u003cp\u003eThe 0.7% replacement trigger is the legacy chain-wear convention. It's accurate for \u003cstrong\u003e6- through 10-speed\u003c\/strong\u003e drivetrains, where wider cog spacing gives the chain a little more room before deformation cascades into the cassette.\u003c\/p\u003e\n\u003cp\u003eModern 11-, 12-, and 13-speed chains want a tighter call. Current chain-maker guidance is to swap a narrow-spaced chain at or before 0.5%, and the 1644\/2's drop-over only triggers at 0.7%. On those drivetrains, the \u003ca href=\"\/products\/chain-wear-indicator-1644-6\"\u003eChain Wear Indicator 1644\/6\u003c\/a\u003e reads both 0.5% and 0.75% directly and is the right tool for the speed.\u003c\/p\u003e\n\u003cp\u003eWhere the 1644\/2 still earns its space is on the older bikes, in the home toolkit that needs to be cheap and small enough to live in a drawer, and as the second gauge on a shop bench that's already running a more granular reader.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e122.5 × 37 × 2 mm (with a 12.7 mm reference length for pin-to-pin spacing)\u003c\/li\u003e\n\u003cli\u003e40 g\u003c\/li\u003e\n\u003cli\u003ePrecision laser-cut steel\u003c\/li\u003e\n\u003cli\u003eGo\/no-go reading at 0.7% replacement threshold\u003c\/li\u003e\n\u003cli\u003eLifetime warranty\u003c\/li\u003e\n\u003cli\u003eArticle number: 1644\/2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt in Zreče, Slovenia\u003c\/h2\u003e\n\u003cp\u003eUnior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The 1644\/2 is the entry-level chain-wear tool in the catalog, and the design reflects what the workshop standard quality-assurance gauge has always been: a known reference shape that either fits or doesn't, ground to a tolerance the user can trust. The cheap version of that gauge is a Popsicle stick with two notches scratched into it. This one is laser-cut steel.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eA go\/no-go reading doesn't tell you when the chain crossed the line, only that it has. Our chain-replacement guide explains what's happening on the cassette teeth between the two readings the 1644\/2 won't separate, why the 0.5% versus 0.75% distinction matters once you know which drivetrain you're on, and how to plan a new chain in before the cassette pays for the delay: \u003ca href=\"\/blogs\/tech-tips\/when-and-how-to-replace-your-chain\"\u003eWhen and how to replace your chain →\u003c\/a\u003e\u003c\/p\u003e","brand":"Unior","offers":[{"title":"Default Title","offer_id":34378795941932,"sku":"617171","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/1644_4.jpg?v=1642726473"},{"product_id":"campagnolo-cassette-remover","title":"Campagnolo Cassette Lockring Tool - 1670.4\/4","description":"\u003cp\u003eCampagnolo's cassette lockring uses a different splined pattern from Shimano and SRAM, and the difference is enough that an HG-pattern tool slips and rounds the splines on contact. The 1670.4\/4 is the Unior socket sized to the Campagnolo lockring, with a 24 mm wrench flat and a 1\/2\" drive on the opposite face; the same back-end format as the rest of our cassette-lockring family, just with the Campy-pattern engagement.\u003c\/p\u003e\n\u003cp\u003eWorkshops that service Italian road bikes need this tool in the drawer. Campagnolo Record, Chorus, Centaur, and Athena cassettes from 9-speed through current Super Record EPS 12-speed all use the Campagnolo lockring pattern. Fulcrum wheels (Campagnolo's wheelset division) ship with the same lockring on freehub-equipped wheelsets. Campagnolo Ekar 13-speed gravel cassettes use a different freehub interface but retain the Campagnolo-pattern lockring on top.\u003c\/p\u003e\n\u003ch2\u003eHow to use it\u003c\/h2\u003e\n\u003cp\u003eProcedure is the same as the Shimano\/SRAM workflow: hold the cassette still with a chain whip on one of the larger cogs, register the 1670.4\/4 in the lockring, and turn counter-clockwise with a 1\/2\" ratchet or a 24 mm wrench. Campagnolo publishes 50 Nm as the lockring torque spec; a touch higher than Shimano\/SRAM's 40 Nm; so expect the break-free to take a firm motion.\u003c\/p\u003e\n\u003cp\u003eIf you're servicing both Shimano\/SRAM and Campagnolo cassettes regularly, the 1670.4\/4 lives next to the \u003ca href=\"\/products\/shimano-cassette-lock-ring-tool\"\u003e1670.5\/4\u003c\/a\u003e in the cassette-tool tray. The two sockets are sized to different splined patterns; mixing them up wastes splines. Mark one with paint or tape on the body if your bench tends toward fast service.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCampagnolo cassettes, 9-speed through 12-speed (Veloce, Centaur, Chorus, Record, Super Record)\u003c\/li\u003e\n\u003cli\u003eCampagnolo Ekar 13-speed gravel cassettes (Campagnolo lockring pattern is retained)\u003c\/li\u003e\n\u003cli\u003eFulcrum wheelsets with Campagnolo-spline freehubs\u003c\/li\u003e\n\u003cli\u003eNot for Shimano or SRAM cassettes (use \u003ca href=\"\/products\/shimano-cassette-lock-ring-tool\"\u003e1670.5\/4\u003c\/a\u003e, \u003ca href=\"\/products\/freewheel-remover-with-guide-pin\"\u003e1670.7\/4\u003c\/a\u003e, \u003ca href=\"\/products\/cassette-remover-with-handle\"\u003e1670.8\/2BI-US\u003c\/a\u003e, or \u003ca href=\"\/products\/12mm-thru-axle-hub-cassette-remover\"\u003e1670.9\/4\u003c\/a\u003e)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCampagnolo splined lockring pattern\u003c\/li\u003e\n\u003cli\u003e24 mm hex wrench flat\u003c\/li\u003e\n\u003cli\u003e1\/2\" square drive socket on the opposite face\u003c\/li\u003e\n\u003cli\u003eTrivalent chrome plated to ISO 1456:2009\u003c\/li\u003e\n\u003cli\u003eArticle number: 1670.4\/4\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt in Zreče, Slovenia\u003c\/h2\u003e\n\u003cp\u003eUnior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. Campagnolo and Unior are both European heritage brands that have kept manufacturing close to home; Vicenza for Campagnolo, Zreče for Unior. The 1670.4\/4 is what happens when a Slovenian forge builds the tool for an Italian groupset: same materials, same trivalent-chrome finish, same construction call as the rest of the Unior cassette-lockring line, with the engagement pattern that matches the Campagnolo cassette on the bench.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eCampagnolo lockrings retain a 12-tooth small cog as the catalog's lower limit on current 11- and 12-speed cassettes, which keeps the chain-whip workflow simple; our \u003ca href=\"\/products\/1660-2dp-us-multispeed-chainwhip\"\u003eMultispeed Chainwhip 1660\/2DP-US\u003c\/a\u003e covers 6-12 speed cogs and pairs with the 1670.4\/4 directly. Ekar 13-speed cassettes do drop below 12 teeth on the small cog (9 or 10 tooth depending on the option), where a chain whip won't seat; the \u003ca href=\"\/products\/cassette-wrench-1670-2bi-us-copy-copy\"\u003eCassette Wrench X Range\u003c\/a\u003e was sized for SRAM 10t but covers the Ekar small-cog range as well. The cassette-replacement workflow walks through the chain-whip-versus-cassette-wrench decision: \u003ca href=\"\/blogs\/tech-tips\/when-and-how-to-replace-your-cassette\"\u003eWhen and how to replace your cassette →\u003c\/a\u003e\u003c\/p\u003e","brand":"Unior","offers":[{"title":"Default Title","offer_id":34378796073004,"sku":"616707","price":15.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/1670.4_4.jpg?v=1642722029"},{"product_id":"bearing-press","title":"Universal Bearing Press - 1721","description":"\u003cp\u003eCartridge bearings live in three places on a modern bike: the headset, the bottom bracket, and (for some hub designs) the rear hub. A press-fit bearing has to go in square and seated fully on its outer race, every time. Push it in cocked and the bearing binds and wears out in a season; push it through the inner race and you crush the seal and contaminate the grease before the bike leaves the stand. The Universal Bearing Press 1721 is the bench tool that gets the operation right.\u003c\/p\u003e\n\u003ch2\u003eWhat the tool does\u003c\/h2\u003e\n\u003cp\u003eThe 1721 is a threaded-shaft press with a handle on one end and a drift on the other. Choose the drift sized to the bearing's outer race diameter, slip it onto the press shaft, and draw the bearing into its bore by turning the handle. Steady, controlled pressure throughout; no hammering, no chance of glancing the drift off-axis. The force transmits through the drift to the bearing's outer race only, which is what keeps the seal between the two races intact. Force through the inner race crushes the seal and contaminates the grease before the bike leaves the stand. A bearing whose grease is contaminated at install isn't a long-term bearing.\u003c\/p\u003e\n\u003cp\u003eThe 1721 ships with a drift assortment sized for the common bearing outside-diameter range across headset cartridges, external BB cup bearings, and most hubs. The drifts live in a laser-cut SOS foam tray inside a plastic case, so they stay paired with the press and don't migrate into the bench drawer. The size match is what “universal” means here: the right drift for the bearing, not a generic mid-size that might or might not bear on the right surface.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOperation: threaded-shaft press, hand-driven\u003c\/li\u003e\n\u003cli\u003eDrift set: sized for the common bearing OD range across headset, BB, and hub bearings\u003c\/li\u003e\n\u003cli\u003eStorage: laser-cut SOS foam tray in a plastic case\u003c\/li\u003e\n\u003cli\u003ePairs with our Bearing Puller for the other half of the operation\u003c\/li\u003e\n\u003cli\u003eMade in Slovenia by Unior\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e Press body, threaded shaft, handle, full drift assortment in the foam tray.\u003c\/p\u003e\n\u003ch2\u003eMade in Slovenia, since 1919\u003c\/h2\u003e\n\u003cp\u003eUnior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The 1721's drift set is the load-bearing decision in the design; a press without the right drifts is a press that bottoms out on the wrong surface. Unior makes the drifts and the press together so the kit fits the bearings the catalog actually services.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eWhen the press resistance suddenly stiffens, the bearing is bottomed in its bore. Stop. A few more turns past bottom doesn't make the bearing more seated; it just compresses the cup or shell against whatever face is on the other side, which (for a headset) is the face you carefully prepped with the head-tube reamer and facer earlier in the same build. Press to the bottom, stop, back the press off, move on.\u003c\/p\u003e\n\u003cp\u003eThe outer-race rule is the load-bearing principle, and the chain-position is the procedural detail. The principle, plus the broader headset prep workflow the 1721 sits inside, is in our walk-through: \u003ca href=\"\/blogs\/tech-tips\/frame-prep-head-tube-and-crown-race\"\u003eFrame prep: head tube, crown race, and star nut work →\u003c\/a\u003e\u003c\/p\u003e","brand":"Unior","offers":[{"title":"Default Title","offer_id":34378796957740,"sku":"623301","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/1721.jpg?v=1642720209"},{"product_id":"freewheel-remover-shimano","title":"Shimano Freewheel Tool - 1670.1\/4","description":"\u003cp\u003eFreewheels predate cassettes and never went away. The 1670.1\/4 is the Unior tool sized to the Shimano-pattern freewheel; a 4-spline engagement that fits the most common freewheel pattern in the US market, including the Sachs, SunRace, and pre-cassette SRAM freewheels that share the Shimano spline geometry. Same back-end format as the modern cassette-lockring family: 24 mm wrench flat plus a 1\/2\" drive on the opposite face.\u003c\/p\u003e\n\u003cp\u003eThe Shimano freewheel pattern shows up on more bikes than the catalog age suggests. Most pre-1996 derailleur bikes use a threaded freewheel rather than a cassette-on-freehub design, and a large share of those use the Shimano-pattern spline. Vintage road, touring, classic mountain, fixie conversions built on freewheel-style hubs; they all back off with the 1670.1\/4. The tool also serves current-production singlespeed and BMX setups whose freewheel manufacturer chose the Shimano pattern.\u003c\/p\u003e\n\u003ch2\u003eHow to use it\u003c\/h2\u003e\n\u003cp\u003eThe freewheel removal workflow is similar to the cassette workflow with one important difference: a freewheel threads onto the hub as a single unit, so there's no separate \"hold the cogs still\" step. The tool engages the freewheel, the wheel rim or skewer-mounted vise holds the wheel, and the 1670.1\/4 turns counter-clockwise.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eRemove the wheel; thread out the QR skewer.\u003c\/li\u003e\n\u003cli\u003eSeat the 1670.1\/4 into the freewheel's spline pattern.\u003c\/li\u003e\n\u003cli\u003eRe-thread the QR skewer through the tool from the non-drive side, snugging the skewer nut against the back face of the tool. The skewer anchors the tool so it can't pop out of the splines under load; same trick as the \u003ca href=\"\/products\/freewheel-remover-with-guide-pin\"\u003ecassette tool with guide pin\u003c\/a\u003e, applied to freewheels.\u003c\/li\u003e\n\u003cli\u003eTurn the 24 mm wrench flat or 1\/2\" drive counter-clockwise. Loosen the skewer a quarter turn each time the freewheel breaks free further.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eFreewheels self-tighten under pedaling load, so the break-free torque can be high; well past what a freshly-installed cassette lockring takes. Use a 1\/2\" breaker bar if you've got one.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eShimano-pattern threaded freewheels (4-spline engagement)\u003c\/li\u003e\n\u003cli\u003eSunRace, Sachs, and pre-cassette SRAM freewheels using the Shimano spline pattern\u003c\/li\u003e\n\u003cli\u003eMost current-production singlespeed and BMX freewheels on the Shimano pattern\u003c\/li\u003e\n\u003cli\u003eNot for SunTour freewheels; they use a different prong pattern (use \u003ca href=\"\/products\/4-prong-freewheel-remover-suntour\"\u003e1670.3\/4\u003c\/a\u003e or \u003ca href=\"\/products\/2-prong-freewheel-remover-suntour\"\u003e1670.2\/4\u003c\/a\u003e)\u003c\/li\u003e\n\u003cli\u003eNot for cassettes (use the appropriate cassette lockring tool)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eShimano-pattern 4-spline freewheel engagement\u003c\/li\u003e\n\u003cli\u003e24 mm hex wrench flat\u003c\/li\u003e\n\u003cli\u003e1\/2\" square drive socket on the opposite face\u003c\/li\u003e\n\u003cli\u003eTrivalent chrome plated to ISO 1456:2009\u003c\/li\u003e\n\u003cli\u003eArticle number: 1670.1\/4\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt in Zreče, Slovenia\u003c\/h2\u003e\n\u003cp\u003eUnior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The 1670.1\/4 is the freewheel-side equivalent of the 1670.5\/4 cassette lockring tool: same back-end format, same trivalent-chrome finish, same construction quality. Workshops servicing both modern cassettes and vintage freewheels keep both tools, and they fit the same drawer.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eOld freewheels can be stuck enough that a 1\/2\" ratchet won't break them free; the leverage on a ratchet handle is below what 20 years of pedaling has cranked the freewheel onto the hub. A 1\/2\" breaker bar; 18 inches or longer; gives you the leverage to break it. We've also had luck with a drop of penetrating oil on the freewheel-to-hub interface, left overnight, before the first attempt. The cassette-replacement workflow has more on the freewheel-versus-cassette call: \u003ca href=\"\/blogs\/tech-tips\/when-and-how-to-replace-your-cassette\"\u003eWhen and how to replace your cassette →\u003c\/a\u003e\u003c\/p\u003e","brand":"Unior","offers":[{"title":"Default Title","offer_id":34378800889900,"sku":"616062","price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/1670.1_4.jpg?v=1642729013"},{"product_id":"mini-chain-tool","title":"Mini Chain Tool+ w\/Valve Core Remover - 1647\/5MINI","description":"\u003cp\u003eA trailside chain failure is the worst kind. You're hours from a workshop, the rest of the ride is back to the car, and you need a chain tool that's actually in a jersey pocket. The Mini Chain Tool+ 1647\/5MINI is what fits there. 53 grams, smaller than a tire lever in the long dimension, and it drives a chain pin the same way the workshop tools do.\u003c\/p\u003e\n\u003cp\u003eWhat surprises most riders the first time they use it is that the small body actually works. The spindle threads are precise enough to push a pin straight, the chain support holds a chain plate against the driving pin, and the handle gives you enough leverage to crack a stiff rivet without slipping. It's not a workshop tool sized down; it's a small tool designed to do one job under conditions where any tool that doesn't is dead weight.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe Mini Chain Tool+ covers \u003cstrong\u003e5- through 11-speed\u003c\/strong\u003e derailleur chains. That's most of the chains a rider is likely to be on for a long ride: 11-speed road and MTB drivetrains, gravel groupsets in the 11-speed era, anything older with narrower or wider cog spacing back to 5-speed. For SRAM AXS flat-top chains or Campagnolo peening, you want the workshop tool back at the car; the Mini's geometry doesn't carry those inserts.\u003c\/p\u003e\n\u003ch2\u003eThe valve-core remover detail\u003c\/h2\u003e\n\u003cp\u003eOpen the handle and the inside surface doubles as a valve-core remover. It fits both \u003cstrong\u003eSchrader and Presta\u003c\/strong\u003e cores; the same slot drives both. This is the second-tool problem that gets solved by carrying one tool: sealant top-up on a tubeless setup, valve-stem swap on a flat repair, presta-to-Schrader replacement on a loaner wheel. The valve-core function is right there, in the part of the handle that already has to be in your pocket.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e5-11 speed derailleur chains\u003c\/li\u003e\n\u003cli\u003e67 × 11 × 43 mm\u003c\/li\u003e\n\u003cli\u003e53 g\u003c\/li\u003e\n\u003cli\u003ePin diameter: 6.8 mm\u003c\/li\u003e\n\u003cli\u003eValve-core remover for Schrader and Presta valves built into the handle\u003c\/li\u003e\n\u003cli\u003eArticle number: 1647\/5MINI\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt in Zreče, Slovenia\u003c\/h2\u003e\n\u003cp\u003eUnior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The Mini Chain Tool+ is the chain tool most riders end up carrying because workshop chain tools don't fit a jersey pocket. The construction comes from the same Zreče workshop lineage as the bench tools, sized for a different use case.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eBreaking a chain trailside is different from breaking one on a bench. You don't have a workstand, you can't shift to small-small because the chain is already broken, and the drivetrain is dirty. The break itself works the same way the workshop sequence does; what changes is the reinstall. If you're carrying a master-link spare (and you should be), that's the fast path back to riding. Our chain-replacement guide names which master links are reusable, which are one-and-done, and what a pin-pressed reinstall looks like when a master link isn't an option: \u003ca href=\"\/blogs\/tech-tips\/when-and-how-to-replace-your-chain\"\u003eWhen and how to replace your chain →\u003c\/a\u003e\u003c\/p\u003e","brand":"Unior","offers":[{"title":"Default Title","offer_id":34378801676332,"sku":"627100","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/1647_5mini.jpg?v=1642726852"},{"product_id":"chain-breaking-pliers","title":"Chain Breaking Pliers - 1640\/1DP","description":"\u003cp\u003eA workshop that breaks chains every day eventually buys a chain plier. The screw-type tool is the universal answer, but if the job is just to open a chain (cleaning, replacement, fitment check) and you're going to do it 20 times this week, the spindle stroke per chain adds up. The Chain Rivet Pliers 1640\/1DP collapse that work into a single squeeze. Pin out, chain open, next bike.\u003c\/p\u003e\n\u003cp\u003eThis is a drop-forged hand tool, not a sheet-metal stamping. The body is entirely hardened and tempered for fatigue resistance, the driving pin is induction-hardened separately so it doesn't deform under repeated use, and the trivalent chrome plating handles the bench environment that eats unfinished steel. It's built to be the chain plier that sees decades of work, not a season.\u003c\/p\u003e\n\u003ch2\u003eHow it works\u003c\/h2\u003e\n\u003cp\u003eA conventional screw-type chain tool tightens a spindle through perhaps 10 to 15 turns of the handle per chain break. The 1640\/1DP replaces that with a single-stroke plier action. The driving pin sits opposite the chain plate, the chain plate sits in the support; close the handles and the pin advances through the chain pin in one continuous motion. The ergonomic design keeps the work in one hand, which matters when the other hand is holding a chain that's still partly attached to a bike on a stand.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe 1640\/1DP works on most derailleur chains in current production, but it does \u003cstrong\u003enot\u003c\/strong\u003e fit 1\/8″ (3.3 mm) roller-width chains. That excludes most BMX and singlespeed chains, which use the wider roller width. If your work is mostly singlespeed or BMX, the \u003ca href=\"\/products\/master-chain-tool\"\u003eMaster Chain Tool 1647\/2BBI\u003c\/a\u003e is the right pick; its 1\/8″ singlespeed support handles those chains directly.\u003c\/p\u003e\n\u003cp\u003eFor shop benches that service mixed-fleet bikes, the 1640\/1DP is the chain-opening tool you reach for first, and the screw-type stays on the bench for the few chains it won't fit.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMost derailleur chains in current production; \u003cstrong\u003enot compatible with 1\/8″ (3.3 mm) roller-width chains\u003c\/strong\u003e (BMX, most singlespeed)\u003c\/li\u003e\n\u003cli\u003e240 × 29 × 13 mm\u003c\/li\u003e\n\u003cli\u003e426 g\u003c\/li\u003e\n\u003cli\u003eDrop forged, entirely hardened and tempered\u003c\/li\u003e\n\u003cli\u003ePin induction hardened\u003c\/li\u003e\n\u003cli\u003eMaterial: premium flex plus carbon steel\u003c\/li\u003e\n\u003cli\u003eSurface finish: trivalent chrome plated to ISO 1456:2009\u003c\/li\u003e\n\u003cli\u003eDouble-plastic-dipped handles\u003c\/li\u003e\n\u003cli\u003eArticle number: 1640\/1DP-US\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt in Zreče, Slovenia\u003c\/h2\u003e\n\u003cp\u003eUnior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The 1640\/1DP is one of the tools where the forge heritage shows up most plainly; drop forging is the manufacturing step that makes the difference between a chain plier that survives a shop floor and one that flexes under load. It's not a tool every home mechanic needs, but for a bench that breaks chains daily, it's the cleaner answer.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eThe plier action is faster than the spindle. The reinstall is the same either way. If you're using the 1640\/1DP to break a chain for cleaning, the chain comes off the bike, into the ultrasonic, and back on; if you're breaking it for replacement, the chain plier doesn't reinstall and you'll want the \u003ca href=\"\/products\/master-link-pliers-1720-4dp\"\u003eMaster Link Pliers 1720\/4DP\u003c\/a\u003e or a screw-type chain tool for the second half of the job. Our chain-replacement guide covers the master-link versus pin-pressed reinstall and which one applies to your chain: \u003ca href=\"\/blogs\/tech-tips\/when-and-how-to-replace-your-chain\"\u003eWhen and how to replace your chain →\u003c\/a\u003e\u003c\/p\u003e","brand":"Unior","offers":[{"title":"Default Title","offer_id":34378808721452,"sku":"624914","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/1640_1dp-us.jpg?v=1648050841"},{"product_id":"cassette-wrench","title":"Cassette Wrench 11\/12t","description":"\u003cp\u003eA chain whip is the standard cassette-holding tool. It also wraps around a greasy chain, fights the chain's tendency to walk off the cog, and leaves your hand smelling like a drivetrain. The Cassette Wrench 11\/12t is the chain-free version of the same job: three steel pins engage the small cog directly, the 350 mm handle gives you the leverage to break a stuck lockring, and you can put the tool back in the drawer without wiping it down.\u003c\/p\u003e\n\u003cp\u003eThe three pins are the design call that matters. A chain whip relies on a wrapped-chain length around the cog teeth; friction plus geometry; to hold the cassette still under load. That works, but it depends on the chain seating cleanly in the cog valley, which it doesn't always do on cogs that have been ridden until the teeth are uneven. The 11\/12t wrench's three pins drop into three separate tooth gaps and grip the cog from inside the gap rather than around the outside. The grip stays positive whether the cog is fresh or already shaped by a worn chain.\u003c\/p\u003e\n\u003cp\u003eThe pins are notched to keep the tool from popping off under the kind of force a 350 mm handle delivers. We've put a hand at the end of the handle on cassettes torqued well past spec, and the pins stay seated.\u003c\/p\u003e\n\u003ch2\u003eThree versions for three cog sizes\u003c\/h2\u003e\n\u003cp\u003eThe Unior cassette-wrench family covers three small-cog ranges. The 11\/12t version here is sized for cassettes with an 11- or 12-tooth small cog; the dominant configuration on modern Shimano and SRAM HG cassettes from 9-speed through 12-speed, and Campagnolo cassettes through 12-speed. The other two:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe \u003ca href=\"\/products\/cassette-wrench-1670-2bi-us-copy\"\u003eCassette Wrench 13\/14t\u003c\/a\u003e is for cassettes with a 13- or 14-tooth small cog; older derailleur cassettes, some touring builds, and a number of BMX-style cassettes.\u003c\/li\u003e\n\u003cli\u003eThe \u003ca href=\"\/products\/cassette-wrench-1670-2bi-us-copy-copy\"\u003eCassette Wrench X Range\u003c\/a\u003e is for SRAM AXS X-Range cassettes with a 10-tooth small cog. Neither this 11\/12t version nor the 13\/14t reach that small.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you're not sure which small cog you have, count the teeth; the cassette's spec sheet will list the cog range as \u003ccode\u003e10-\u003c\/code\u003e or \u003ccode\u003e11-\u003c\/code\u003e or \u003ccode\u003e12-\u003c\/code\u003e something, and the first number is the small cog.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eShimano HG cassettes with 11- or 12-tooth small cogs (most current road and MTB 9- through 12-speed)\u003c\/li\u003e\n\u003cli\u003eSRAM HG cassettes with 11- or 12-tooth small cogs (XD and XDR included)\u003c\/li\u003e\n\u003cli\u003eCampagnolo cassettes with 11- or 12-tooth small cogs\u003c\/li\u003e\n\u003cli\u003eMicroshift and Sunrace HG cassettes with 11- or 12-tooth small cogs\u003c\/li\u003e\n\u003cli\u003eNot for 10-tooth small cog cassettes (use \u003ca href=\"\/products\/cassette-wrench-1670-2bi-us-copy-copy\"\u003eX-Range\u003c\/a\u003e)\u003c\/li\u003e\n\u003cli\u003eNot for 13- or 14-tooth small cog cassettes (use \u003ca href=\"\/products\/cassette-wrench-1670-2bi-us-copy\"\u003e13\/14t\u003c\/a\u003e)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThree pin engagement on the small cog\u003c\/li\u003e\n\u003cli\u003eNotched pins for slip resistance under load\u003c\/li\u003e\n\u003cli\u003e350 mm handle for full lockring break-free leverage\u003c\/li\u003e\n\u003cli\u003eSized for 11- or 12-tooth small cog cassettes\u003c\/li\u003e\n\u003cli\u003eArticle number: 1670\/2BI-US\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt in Zreče, Slovenia\u003c\/h2\u003e\n\u003cp\u003eUnior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The cassette wrench design is the kind of detail that comes out of a professional service environment; a chain whip works, but it doesn't work \u003cem\u003ebetter\u003c\/em\u003e the longer you've been wrenching, and the pin-engagement version is faster, cleaner, and easier on the cog teeth. The three Unior cassette wrenches together cover the full small-cog range from 10t up to 14t.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eIf you're working through a stack of cassettes; wheel building, batch service, a season's worth of swaps; the time the cassette wrench saves over a chain whip adds up. The pins seat in two seconds where a chain whip takes ten to wrap and seat, and there's no chain-management between cassettes. Pair the wrench with the \u003ca href=\"\/products\/cassette-remover-with-handle\"\u003eIntegrated Cassette Lockring Wrench 1670.8\/2BI-US\u003c\/a\u003e and the swap is two motions: chain whip side and lockring side, both with handles long enough to break torque without a ratchet. The cassette-replacement workflow has more on which holder fits which drivetrain: \u003ca href=\"\/blogs\/tech-tips\/when-and-how-to-replace-your-cassette\"\u003eWhen and how to replace your cassette →\u003c\/a\u003e\u003c\/p\u003e","brand":"Unior","offers":[{"title":"11\/12t","offer_id":34378809606188,"sku":"624931","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/1670_2bi-us.jpg?v=1642722383"},{"product_id":"hook-wrench","title":"Lock Ring Wrench - 255\/2","description":"\u003cp\u003eA hook wrench engages slotted or notched lockrings; the rings whose engagement points are pockets cut into the outer face rather than splines or prongs. The 255\/2 is the Unior hook wrench sized for the lockring patterns most commonly seen on bicycles: fixed-gear cog lockrings, some bottom-bracket lockrings, threaded-headset lockrings. One tool, several jobs.\u003c\/p\u003e\n\u003cp\u003eUnior makes 14 hook wrench sizes across the industrial-tool catalog. The 255\/2 is the size selected for bike-specific use: long enough to give leverage on a tightened lockring without being so long that it doesn't fit between hub flanges or against a frame. The hook itself is shaped to drop cleanly into the lockring's notch and stay engaged through the turn.\u003c\/p\u003e\n\u003ch2\u003eWhere the 255\/2 earns its place\u003c\/h2\u003e\n\u003cp\u003eThe wrench is a multipurpose tool; three or four jobs on a typical service bike, depending on the build:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFixed-gear cog lockring.\u003c\/strong\u003e Track and fixed-gear hubs use a small reverse-threaded lockring over the cog that the 255\/2 backs off. The \u003ca href=\"\/products\/1659-2dp-us-singlespeed-chainwhip\"\u003eSinglespeed Chainwhip 1659\/2DP\u003c\/a\u003e has an integrated lockring tool, but the 255\/2 is the dedicated version if you do fixed-gear work in volume.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreaded bottom-bracket lockring.\u003c\/strong\u003e Older square-taper and ISIS bottom brackets often use a slotted lockring on the non-drive cup. The 255\/2 fits the most common notch geometries; oddball patterns may need a dedicated BB lockring tool instead.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreaded headset lockring.\u003c\/strong\u003e Quill-stem headsets on classic bikes use a slotted top lockring above the adjustable cone. The 255\/2 backs it off without resorting to a hammer-and-punch workaround.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe tool isn't a one-size-fits-everything solution; lockring patterns vary by manufacturer and era, and some notches are too narrow or too deep for the 255\/2's hook. When the hook drops in cleanly, the tool works. When it doesn't, you've got a different lockring pattern and you need a different tool.\u003c\/p\u003e\n\u003ch2\u003eHow to use it\u003c\/h2\u003e\n\u003cp\u003eIdentify the lockring's notch; the slot or pocket cut into its outer face. Slip the wrench's hook into the notch with the handle oriented for the swing arc you need. Turn counter-clockwise (the usual direction for backing off, though some patterns reverse this; check the specific component if uncertain). Apply force through the handle; lockrings are typically tightened to lower torque than cassette lockrings, so they back off with a firm hand-pull rather than a breaker bar.\u003c\/p\u003e\n\u003cp\u003eIf the hook doesn't seat, don't force it. Forcing a slightly-mismatched hook wrench rounds the notch and makes the next attempt harder. Either the lockring is a different pattern (check Unior's other lockring-tool sizes) or the notch has already been rounded by prior service.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFixed-gear and track cog lockrings (most common notch patterns)\u003c\/li\u003e\n\u003cli\u003eSlotted bottom-bracket lockrings (older square-taper, ISIS, some current designs)\u003c\/li\u003e\n\u003cli\u003eQuill-stem headset lockrings\u003c\/li\u003e\n\u003cli\u003eOther slotted\/notched rings on the bike that match the 255\/2's hook geometry\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSlotted-engagement hook design\u003c\/li\u003e\n\u003cli\u003eBike-appropriate handle length for between-flange clearance\u003c\/li\u003e\n\u003cli\u003eTrivalent chrome plated to ISO 1456:2009\u003c\/li\u003e\n\u003cli\u003eArticle number: 255\/2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt in Zreče, Slovenia\u003c\/h2\u003e\n\u003cp\u003eUnior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The hook wrench is one of those tools that started life on industrial benches; Unior makes 14 sizes across the broader catalog for non-bike applications; and the bike-specific version is the size that earned its place through workshop use rather than catalog design. The 255\/2 is in the cycling collection because mechanics keep reaching for it.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eIf you're working on older bikes or doing fixed-gear conversions, the 255\/2 ends up in the same drawer as your bottom-bracket and headset tools. The fixed-gear-cog application is the one most riders never think about until the cog needs swapping for a different ratio; on a track bike, that's a 90-second job with the 255\/2 and a chainwhip. For multi-job bench utility, the 255\/2 is the kind of tool that sits there unused for weeks and then handles three different jobs in an afternoon. The cassette-replacement workflow covers the fixed-gear lockring sequence: \u003ca href=\"\/blogs\/tech-tips\/when-and-how-to-replace-your-cassette\"\u003eWhen and how to replace your cassette →\u003c\/a\u003e\u003c\/p\u003e","brand":"Unior","offers":[{"title":"34mm - 36mm","offer_id":34378811736108,"sku":"613054","price":7.99,"currency_code":"USD","in_stock":true},{"title":"40mm - 42mm","offer_id":34378811768876,"sku":"613055","price":7.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/255_2.jpg?v=1642725935"},{"product_id":"master-chain-tool","title":"Master Chain Tool - 1647\/2BBI","description":"\u003cp\u003eA worn chain quietly destroys the rest of your drivetrain. Push past the wear-indicator threshold and the elongated rollers carve your cassette teeth and round off the chainrings within a few hundred miles. The Master Chain Tool is the tool we reach for the moment a wear-checker drops in past spec, and the one we'd want on a stand at every shop that takes chains seriously.\u003c\/p\u003e\n\u003cp\u003eThis is the most complete chain tool in our range. The machined body and precisely-made spindle threads do the visible work; the floating chain support is the quiet detail that matters. It centers the chain plate against the driving pin on its own, so the pin pushes straight through every time. No coaxing, no off-center marks, no tweaked outer plates after reinstall.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe Master Chain Tool works with every derailleur chain from 6 to 13 speed. SRAM's AXS flat-top chains get their own dedicated support insert. Campagnolo 11-, 12-, and 13-speed chains are supported for peening; an included pin blocker handles the second half of the connection. For shop bikes and singlespeeds, the 1\/8″ support covers those too.\u003c\/p\u003e\n\u003cp\u003eThree interchangeable chain supports ship in the box: a single-link support (pre-installed), a wider double-link support for extra grip on stiff or fresh chains, and the dedicated AXS support. A hidden compartment in the body of the tool holds a replacement chain pin, which is where it'll be when you need it instead of the cassette drawer you swore it was in.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e6–13-speed derailleur chains; SRAM AXS flat-top; Campagnolo 11\/12\/13 peening; 1\/8″ single-speed\u003c\/li\u003e\n\u003cli\u003eMachined body, trivalent chrome plated\u003c\/li\u003e\n\u003cli\u003e89.5 × 42 × 191.5 mm\u003c\/li\u003e\n\u003cli\u003e560 g\u003c\/li\u003e\n\u003cli\u003eArticle number: 1647\/2BBI\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e three interchangeable chain supports (single-link pre-installed, double-link, dedicated SRAM AXS) plus a replacement chain pin in the hidden compartment.\u003c\/p\u003e\n\u003ch2\u003eBuilt in Zreče, Slovenia\u003c\/h2\u003e\n\u003cp\u003eUnior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. Bikerumor, marking the centenary: \u003cem\u003e\"Unior is one of the rare companies to make their own tools in-house and has been doing so for a hundred years now in the same place in Slovenia.\"\u003c\/em\u003e The Master Chain Tool is one of the products where that vertical integration shows up. The modular insert system is Unior's own design, not a re-badge of a generic chain tool body.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eMost home mechanics underestimate how often a chain wears out. By the time you can hear chain skip on the cassette, the cassette is usually past saving too. Our chain-replacement guide walks through the wear-checker reading that should trigger the swap, the difference between Campagnolo peening and SRAM PowerLock reinstalls, and where the Master Chain Tool's supports earn their keep: \u003ca href=\"\/blogs\/tech-tips\/when-and-how-to-replace-your-chain\"\u003eWhen and how to replace your chain →\u003c\/a\u003e\u003c\/p\u003e","brand":"Unior","offers":[{"title":"Default Title","offer_id":34378812686380,"sku":"628516","price":109.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/1647_2bbi-us.png?v=1612554023"},{"product_id":"1660-2dp-us-multispeed-chainwhip","title":"Multispeed Chainwhip - 1660\/2DP-US","description":"\u003cp\u003eA chainwhip is the cassette-holding half of the cassette-removal workflow: the lockring tool turns the lockring; the chainwhip stops the cassette from spinning with it. The 1660\/2DP-US is Unior's revised multispeed chainwhip, sized to cover everything from a 6-speed legacy cassette through current 12-speed including SRAM AXS Flattop. Two upgrades over the old version make this the workshop default: a magnetic chain retainer that replaces the old spring-tension design, and a double-dipped ergonomic handle that doesn't fight your grip under load.\u003c\/p\u003e\n\u003cp\u003eThe magnet matters more than it sounds. A spring-tension chain retainer holds the chain against the cog with constant pressure, which works fine until the chain falls slack during a cog change or a cassette swap. The chain falls off the cog, you reset, and on a busy bench that's three or four extra steps a day. The magnet holds the chain segment in place against the chainwhip body when it's not engaged on a cog, so the chain stays parked when you set the tool down. Pick the tool up, drop the chain on the cog, and the magnet releases; no reseating step.\u003c\/p\u003e\n\u003cp\u003eThe double-dipped handle is the other one. The chainwhip works against the lockring tool's torque, which means the handle's load profile is high: a stuck lockring takes 50 N or more on the chainwhip side to hold steady. A bare steel handle in a sweaty hand is hard to grip at those forces; the bi-material grip stays positive even when the bench is hot and the day's been long.\u003c\/p\u003e\n\u003ch2\u003eHow to use it\u003c\/h2\u003e\n\u003cp\u003eWrap the chain segment around one of the larger cogs on the cassette; for most workflows, the third or fourth cog from the largest end. The magnet releases as the chain seats. Hold the chainwhip handle counter-rotational to the lockring tool's swing. As the lockring turns counter-clockwise, the chainwhip resists clockwise; the chain pulls tighter against the cog as the resistance builds, which locks the engagement. Keep the handle steady through the break-free.\u003c\/p\u003e\n\u003cp\u003eThe 1660\/2DP-US fits any cassette in current production with derailleur-style cog teeth. SRAM Flattop chains size and engage the same way as conventional chains for the purpose of cassette holding; the Flattop plate geometry doesn't change the cog-tooth engagement, so the chainwhip works on AXS Red, Force, Rival, Apex, and the AXS Eagle Transmission cassettes.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAll derailleur-style cassettes from 6- through 12-speed\u003c\/li\u003e\n\u003cli\u003eShimano HG, SRAM HG, SRAM XD\/XDR\u003c\/li\u003e\n\u003cli\u003eSRAM AXS Flattop chains and AXS Eagle Transmission cassettes\u003c\/li\u003e\n\u003cli\u003eCampagnolo cassettes 9-speed through 12-speed\u003c\/li\u003e\n\u003cli\u003eMicroshift and Sunrace cassettes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor 10-tooth small cogs on SRAM AXS X-Range cassettes, a chainwhip wrapped around the small cog is awkward; we recommend the \u003ca href=\"\/products\/cassette-wrench-1670-2bi-us-copy-copy\"\u003eCassette Wrench X Range\u003c\/a\u003e instead, with the chainwhip as backup on the larger cogs. Single-speed and fixed-gear builds need the \u003ca href=\"\/products\/1659-2dp-us-singlespeed-chainwhip\"\u003eSinglespeed Chainwhip 1659\/2DP\u003c\/a\u003e, which has an integrated lockring tool for fixed-gear lockrings.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDouble-dipped ergonomic bi-material handle\u003c\/li\u003e\n\u003cli\u003eMagnetic chain retainer (replaces old spring design)\u003c\/li\u003e\n\u003cli\u003eCompatible with 6- to 12-speed including SRAM Flattop\u003c\/li\u003e\n\u003cli\u003eArticle number: 1660\/2DP-US\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt in Zreče, Slovenia\u003c\/h2\u003e\n\u003cp\u003eUnior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The chainwhip revision; magnet over spring, bi-material handle, full Flattop coverage; was driven by feedback from professional mechanics who use the tool every working day. The previous design worked; this one is faster across a day of cassette work, which is the kind of compound saving that pays back the tool inside a season of shop use.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eMost home mechanics buy a chainwhip and use it on one or two specific cassettes, which makes any chainwhip feel fine. Buy the tool you'd want if you had ten cassettes to do in an afternoon. The magnet and the handle on the 1660\/2DP-US are the details that show up across that volume of work, not on the first swap. Pair it with the \u003ca href=\"\/products\/cassette-remover-with-handle\"\u003eIntegrated Cassette Lockring Wrench 1670.8\/2BI-US\u003c\/a\u003e and you've got the full cassette-removal toolset in two pieces. The cassette-replacement workflow walks through holder-and-lockring pairing per drivetrain: \u003ca href=\"\/blogs\/tech-tips\/when-and-how-to-replace-your-cassette\"\u003eWhen and how to replace your cassette →\u003c\/a\u003e\u003c\/p\u003e","brand":"Unior","offers":[{"title":"Default Title","offer_id":39524675616812,"sku":"628904","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/files\/Multispeed-Chainwhip.jpg?v=1732110583"},{"product_id":"1659-2dp-us-singlespeed-chainwhip","title":"Singlespeed Chainwhip - 1659\/2DP","description":"\u003cp\u003eSingle-speed and fixed-gear builds use a different chain; wider rollers, thicker plates; and a different lockring on the cog side. The 1659\/2DP is the chainwhip sized for those bikes: heavier-gauge chain segment for the 1\/8\" cogs that fixed-gear builds run, plus an integrated lockring tool on the handle end for fixed-gear lockrings. One tool replaces what would otherwise be two on the bench.\u003c\/p\u003e\n\u003cp\u003eThe integrated lockring tool is the design call that earns the 1659\/2DP its place in the singlespeed-specific catalog. Fixed-gear hubs use a separate small lockring threaded over the cog itself (it's the reverse-threaded ring that holds the fixed cog against the freewheel-pattern threads on the hub body). Backing the lockring off used to mean reaching for a hook wrench or a flat lockring tool; the 1659\/2DP has the engagement built into the handle, so the same tool that holds the cog still also breaks the lockring loose. Sequence: handle the lockring first, then flip the tool around and use the chain segment to hold the cog while you spin the cog off the hub threads.\u003c\/p\u003e\n\u003cp\u003eThe other upgrades on this version are the same as the multispeed chainwhip: a magnetic chain retainer in place of the old spring (the chain parks against the body when you set the tool down), and a double-dipped bi-material handle that stays positive under load.\u003c\/p\u003e\n\u003ch2\u003eHow to use it\u003c\/h2\u003e\n\u003cp\u003eFor the cog-lockring (the small ring threaded over the cog): seat the integrated lockring tool's hooks against the lockring's notches, then turn counter-clockwise. Fixed-gear cog lockrings are torqued lightly compared to cassette lockrings; they back off with hand force most of the time.\u003c\/p\u003e\n\u003cp\u003eFor the cog itself: wrap the chain segment around the cog and pull the handle counter-rotational to the direction you're trying to spin the cog. Fixed-gear cogs thread on conventionally (right-hand thread); freewheel-style singlespeed cogs thread the same direction. Standard freewheel-removal lockring tools go on the hub side; the chainwhip holds the cog still while a separate hub-side tool (e.g. \u003ca href=\"\/products\/universal-single-speed-freewheel-remover\"\u003eUniversal Single-Speed Freewheel Remover 1722\/2BI-US\u003c\/a\u003e) backs the cog off.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1\/8\" single-speed cogs (track, fixed-gear, single-speed road\/MTB conversions)\u003c\/li\u003e\n\u003cli\u003eFixed-gear cog lockrings (integrated tool on the handle)\u003c\/li\u003e\n\u003cli\u003eNot for multispeed derailleur cassettes (use \u003ca href=\"\/products\/1660-2dp-us-multispeed-chainwhip\"\u003eMultispeed Chainwhip 1660\/2DP-US\u003c\/a\u003e)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1\/8\" chain segment for singlespeed\/track cogs\u003c\/li\u003e\n\u003cli\u003eIntegrated lockring tool on the handle end (for fixed-gear cog lockrings)\u003c\/li\u003e\n\u003cli\u003eDouble-dipped ergonomic bi-material handle\u003c\/li\u003e\n\u003cli\u003eMagnetic chain retainer (replaces old spring design)\u003c\/li\u003e\n\u003cli\u003eArticle number: 1659\/2DP\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt in Zreče, Slovenia\u003c\/h2\u003e\n\u003cp\u003eUnior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The singlespeed chainwhip is the kind of tool that gets overlooked in catalogs sized around current road\/MTB drivetrains; but track racing, fixed-gear riding, and singlespeed commuters are a real population, and the right tool for them is genuinely different from the multispeed version. The integrated lockring head on the 1659\/2DP is the workshop detail that says someone who builds these bikes designed it.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eIf you're doing fixed-gear or singlespeed work specifically; track racing, bike-courier service, fixed-gear conversions; the 1659\/2DP is the chainwhip you actually want, not the multispeed version with a too-narrow chain segment on a 1\/8\" cog. The chain segments aren't cross-compatible: a 3\/32\" chain on a 1\/8\" cog rides too high in the tooth gap and can slip under load. Pair the 1659\/2DP with the \u003ca href=\"\/products\/universal-single-speed-freewheel-remover\"\u003eUniversal Single-Speed Freewheel Remover 1722\/2BI-US\u003c\/a\u003e for the full singlespeed-rear-end toolkit. The cassette-replacement workflow covers the singlespeed and track-bike sequence end-to-end: \u003ca href=\"\/blogs\/tech-tips\/when-and-how-to-replace-your-cassette\"\u003eWhen and how to replace your cassette →\u003c\/a\u003e\u003c\/p\u003e","brand":"Unior","offers":[{"title":"Default","offer_id":39524675813420,"sku":"628902","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/1659_2dp-us.jpg?v=1629123669"},{"product_id":"bleedkit-com-bleed-kit-for-shimano-basic","title":"Bleedkit.com Basic Shimano Bleed Kit","description":"\u003cp\u003eTwo pieces of the Shimano flat-bar bleed actually pay rent on the bench: a transparent funnel at the lever that lets you see the fluid column move, and a clean caliper-end syringe with a tube that seats squarely on the bleed nipple. The Basic Shimano kit ships exactly those two pieces plus the small parts that hold them together, on the bet that a home mechanic with one or two Shimano flat-bar bikes does not need a workshop's worth of inserts to do the job correctly. Mineral oil and bleed block are sold separately on the same logic.\u003c\/p\u003e\n\u003ch2\u003eWhat's in the kit\u003c\/h2\u003e\n\u003cp\u003eThe lever funnel is a 30 ml transparent syringe body with a brass M5 thread, sized to drop onto any flat-bar Shimano master cylinder. A stainless threaded plug with a hanger closes the funnel for transport between bikes. The caliper end ships with a 20 ml syringe and a long-lasting tube, and a stainless tube insert guides the tube into the bleed nipple. One gravity-bleed clamp and a spare O-ring round out the kit.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe kit fits every flat-bar Shimano hydraulic brake: XTR, XT, Saint, Zee, SLX, Deore, Alivio, Acera, Alfine, Metrea. It does not fit drop-bar Shimano levers, which require both a brass M5 dropbar adapter and a smaller dropbar-specific bleed block; those parts live in the Premium Road and Workshop Master kits. It does not fit the 2026 Dura-Ace R9300 or Ultegra R8270 lever generation, which moved from M5 to M7 at the funnel. Shimano mineral oil and the matching bleed block are sold separately; the kit is sized around the home-mechanic who already has both on the shelf.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFunnel: 30 ml transparent, brass M5 thread\u003c\/li\u003e\n\u003cli\u003eCaliper syringe: 20 ml with long-lasting tube\u003c\/li\u003e\n\u003cli\u003eBleed block: not included\u003c\/li\u003e\n\u003cli\u003eFluid: not included\u003c\/li\u003e\n\u003cli\u003eMade by Bleedkit.com (Ljubljana, Slovenia)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e 30 ml lever funnel with brass M5 thread, stainless threaded plug with hanger, 20 ml caliper syringe with tube, stainless tube insert, gravity-bleed clamp, one spare O-ring.\u003c\/p\u003e\n\u003ch2\u003eMade in Ljubljana, distributed by Euro Toolworks\u003c\/h2\u003e\n\u003cp\u003eBleedkit.com builds per-brake-system kits in Ljubljana, Slovenia and has done so since 2011; distribution through Euro Toolworks is the same path that brings Unior cycling tools to the North American market. Unior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The Basic Shimano kit strips the family back to the funnel-and-syringe combination that does the work, leaves everything else at the supplier's catalog, and trusts the home mechanic to pair it with the fluid and block already on the bench.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eA first-time Shimano bleed on a flat-bar lever runs cleanest if you start with the rotor off and the caliper off the frame. The 20 ml syringe and tube want the bleed nipple oriented straight up; that is easier to achieve in a bench vise than on a bike with the wheel still in. Once the caliper is bled, refitting it to the frame with the funnel still full at the lever lets you finish the gravity bleed without losing fluid column position.\u003c\/p\u003e\n\u003cp\u003eWhether this kit is sized right for your bike or whether the bleed-block-and-oil-included Premium Shimano kit is the better starting point is laid out in our compatibility guide: \u003ca href=\"\/blogs\/tech-tips\/which-bleed-kit-fits-shimano-r9300-sram-maven-2026\"\u003eWhich bleed kit fits Shimano R9300, Ultegra R8270, and SRAM Maven Bronze →\u003c\/a\u003e\u003c\/p\u003e","brand":"Bleedkit.com","offers":[{"title":"Default Title","offer_id":40285102669868,"sku":"BK-28005","price":23.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/BK-28005_main-photo-white_2400px.jpg?v=1651687864"},{"product_id":"bleedkit-com-bleed-kit-for-sram-basic-edge","title":"Bleedkit.com Basic Edge Bleed Kit","description":"\u003cp\u003eTopping up an Edge-only bench is a tighter scope than a full SRAM service kit, and the Basic Edge kit is sized to match. The 2017+ SRAM hydraulic family (Code, Level, Guide, G2, the Force AXS \/ Red AXS road generations, plus the recent Maven family on its mineral-oil side) all share the Bleeding Edge caliper port and skip the older M5-port plumbing entirely. A home mechanic with a single SRAM bike from the Bleeding Edge era does not need both port assemblies, and does not need the workshop's two-block coverage either. The Basic Edge kit ships the funnel, the Edge fitting, and not much else.\u003c\/p\u003e\n\u003ch2\u003eWhat's in the kit\u003c\/h2\u003e\n\u003cp\u003eTwo 20 ml Becton \u0026amp; Dickinson syringes drive the bleed at the lever and caliper ends. One M5 assembly handles the SRAM lever's funnel thread. One Edge assembly fits the Bleeding Edge caliper port. Spare O-rings round out the box. No bleed block ships in the kit; no fluid ships in the kit. Both are sold separately and chosen per the brake family the kit will service.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe kit is compatible only with the latest SRAM 2017+ hydraulic brakes with a Bleeding Edge bleed port: SRAM Code, Level, Guide, G2, Force AXS, and Red AXS. It does not fit the modern Maven family; Maven takes the 5.0 mm bleed block (which this kit does not include), and the Premium Edge or Workshop SRAM kits are the right call for a Maven workshop. It does not fit the older SRAM hydraulic brakes with an M5 caliper-side bleed port; those need both an M5 lever-side and an M5 caliper-side assembly, which sit in the Workshop SRAM and Basic SRAM kits. It does not fit Avid Elixir \/ Juicy or the older Formula hydraulics that use the M5 caliper-side port. Fluid follows the standard SRAM split: DOT 5.1 for the Code-family side, SRAM Maxima Mineral Brake Oil for Maven and DB8.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSyringes: 2x 20 ml Becton \u0026amp; Dickinson\u003c\/li\u003e\n\u003cli\u003eLever-end assembly: 1x M5\u003c\/li\u003e\n\u003cli\u003eCaliper-end assembly: 1x Edge\u003c\/li\u003e\n\u003cli\u003eBleed block: not included\u003c\/li\u003e\n\u003cli\u003eFluid: not included\u003c\/li\u003e\n\u003cli\u003eMade by Bleedkit.com (Ljubljana, Slovenia)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e 2x 20 ml Becton \u0026amp; Dickinson syringes, 1x M5 assembly, 1x Edge assembly, spare O-rings.\u003c\/p\u003e\n\u003ch2\u003eMade by Bleedkit, Ljubljana\u003c\/h2\u003e\n\u003cp\u003eBleedkit.com builds per-brake-system kits in Ljubljana, Slovenia and has done so since 2011; distribution through Euro Toolworks is the same path that brings Unior cycling tools to the North American market. Unior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The Basic Edge kit covers the Bleeding Edge port and stops there; the rest of the SRAM family is in the Workshop SRAM or Basic SRAM box, and the rest of the small-parts kit is on the supplier's shelf the mechanic already buys from.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eThe Bleeding Edge fitting at the caliper is the part that catches most first-time SRAM bleeders out, because the engagement feels different from a Shimano bleed nipple. The Edge fitting is keyed and seats against an O-ring; the fluid path opens once the assembly is hand-tight against the port, not by backing off a bleed screw. Get the fitting square against the port before pulling on the syringe, and the bleed runs cleanly. Force it off-square and the O-ring will not seat.\u003c\/p\u003e\n\u003cp\u003eWhether the Basic Edge fits your bike, or whether the Premium Edge (with bleed blocks) or the Workshop SRAM (with the older M5 assemblies too) is the better starting point, is laid out in our compatibility guide: \u003ca href=\"\/blogs\/tech-tips\/which-bleed-kit-fits-shimano-r9300-sram-maven-2026\"\u003eWhich bleed kit fits Shimano R9300, Ultegra R8270, and SRAM Maven Bronze →\u003c\/a\u003e\u003c\/p\u003e","brand":"Bleedkit.com","offers":[{"title":"Default Title","offer_id":40285105160236,"sku":"BK-80005","price":38.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/BK-80005_main-photo-white_2400px.jpg?v=1651687942"},{"product_id":"bleedkit-com-bleed-kit-for-sram-basic","title":"Bleedkit.com Basic Bleed Kit","description":"\u003cp\u003eA bare-essentials SRAM kit covers both port styles and skips the rest. The Basic SRAM kit ships two M5 funnels for the older SRAM lever thread and one Edge assembly for the 2017+ Bleeding Edge caliper port, which between them reach every SRAM hydraulic brake in current and recent production. What the kit does not carry is the workshop's bleed blocks, the fluid, or the small-parts grab bag; those are the difference between the Basic kit and the Workshop SRAM, and the home mechanic with one or two SRAM bikes does not pay for them.\u003c\/p\u003e\n\u003ch2\u003eWhat's in the kit\u003c\/h2\u003e\n\u003cp\u003eTwo 20 ml Becton \u0026amp; Dickinson syringes drive the bleed. Two M5 assemblies handle the older SRAM lever's M5 funnel thread; one Edge assembly handles the Bleeding Edge caliper port that 2017+ SRAM hydraulics use. Spare O-rings round out the box. The kit does not include a bleed block (sold separately, sized to the brake family) and does not include fluid (sold separately, DOT 5.1 for Code-family or Maxima Mineral for Maven).\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe kit fits every current and recent SRAM hydraulic brake: SRAM Code (RSC, R, Ultimate, Silver, Bronze), Level, Guide, G2, Force AXS, Red AXS, plus the modern Maven family (Ultimate Expert, Ultimate, Silver, Bronze) and the Avid Elixir \/ Juicy legacy and the older Formula hydraulics (Oro, C1, R1, R0, K24, K18). It does not fit Formula Cura, which uses a Cura-specific port outside the Bleeding Edge fitting pattern. The fluid call splits on the brake family: Maven and DB8 take SRAM Maxima Mineral Brake Oil; the rest of the SRAM hydraulic family plus Avid and older Formula take DOT 5.1.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSyringes: 2x 20 ml Becton \u0026amp; Dickinson\u003c\/li\u003e\n\u003cli\u003eLever-end assemblies: 2x M5\u003c\/li\u003e\n\u003cli\u003eCaliper-end assembly: 1x Edge\u003c\/li\u003e\n\u003cli\u003eBleed block: not included\u003c\/li\u003e\n\u003cli\u003eFluid: not included\u003c\/li\u003e\n\u003cli\u003eMade by Bleedkit.com (Ljubljana, Slovenia)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e 2x 20 ml Becton \u0026amp; Dickinson syringes, 2x M5 assembly, 1x Edge assembly, spare O-rings.\u003c\/p\u003e\n\u003ch2\u003eFrom the Ljubljana bench, since 2011\u003c\/h2\u003e\n\u003cp\u003eBleedkit.com builds per-brake-system kits in Ljubljana, Slovenia and has done so since 2011; distribution through Euro Toolworks is the same path that brings Unior cycling tools to the North American market. Unior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The Basic SRAM kit reaches every SRAM hydraulic family with the funnel-and-Edge set that does the actual fluid work, and trusts the home mechanic to pair it with the block and fluid the bike on the stand needs.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eThe two-M5 layout on this kit is what surprises Workshop SRAM owners switching down to it for travel: there is no Edge-side-as-lever swap in the workflow. One M5 funnels the lever, one M5 is a backup for the same role on a second bike, and the Edge assembly stays on the caliper side. Set the assemblies up before draining anything; mid-bleed assembly-swaps cost more time than building the kit out at the start.\u003c\/p\u003e\n\u003cp\u003eWhether the Basic SRAM is sized right for your bike or whether the Workshop SRAM (TPX syringes plus both blocks) is the upgrade worth making is laid out in our compatibility guide: \u003ca href=\"\/blogs\/tech-tips\/which-bleed-kit-fits-shimano-r9300-sram-maven-2026\"\u003eWhich bleed kit fits Shimano R9300, Ultegra R8270, and SRAM Maven Bronze →\u003c\/a\u003e\u003c\/p\u003e","brand":"Bleedkit.com","offers":[{"title":"Default Title","offer_id":40285106110508,"sku":"BK-80010","price":46.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/BK-80010_main-photo-white_2400px.jpg?v=1651687919"},{"product_id":"bleedkit-com-bleed-kit-for-sram-premium-edge","title":"Bleedkit.com Premium Edge Bleed Kit","description":"\u003cp\u003eBoth bleed-block sizes ship in the Premium Edge kit, which is the version of the Edge-only kit that covers a workshop running fully on the 2017+ Bleeding Edge SRAM family; no older M5-port brakes still on the bench, but enough variety inside the Edge family to need both the 4.0 mm older-style block and the 5.0 mm Maven block. The lever and caliper assemblies are the same as the Basic Edge kit; the difference is the small-parts coverage that lets a single kit handle a Maven this morning and a Code-family bike this afternoon without a second box.\u003c\/p\u003e\n\u003ch2\u003eWhat's in the kit\u003c\/h2\u003e\n\u003cp\u003eTwo 20 ml Becton \u0026amp; Dickinson syringes drive the bleed at the lever and caliper ends. One M5 assembly handles the SRAM lever's funnel thread. One Edge assembly fits the Bleeding Edge caliper port. The 4.0 mm bleed block covers Code, Level, Guide, G2, Force AXS, and Red AXS; the 5.0 mm block covers the modern Maven family. A Torx T10 wrench, a 25 cm Velcro strap for tying the caliper syringe to the frame during the bleed, spare O-rings, and a pair of size-L nitrile gloves complete the kit.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe kit fits the latest SRAM 2017+ hydraulic brakes with a Bleeding Edge bleed port: SRAM Code (RSC, R, Ultimate, Silver, Bronze), SRAM Level, Guide, G2, Force AXS, Red AXS, and the modern Maven family (Ultimate Expert, Ultimate, Silver, Bronze). It does not fit the older SRAM hydraulic brakes with an M5 bleed port; those need both M5-port assemblies, which live in the Workshop SRAM and Basic SRAM kits. It does not fit Avid Elixir \/ Juicy or older Formula hydraulics, which predate the Bleeding Edge port. The fluid is sold separately, with the standard SRAM split: DOT 5.1 for the Code-family side, SRAM Maxima Mineral Brake Oil for Maven and DB8.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSyringes: 2x 20 ml Becton \u0026amp; Dickinson\u003c\/li\u003e\n\u003cli\u003eLever-end assembly: 1x M5\u003c\/li\u003e\n\u003cli\u003eCaliper-end assembly: 1x Edge\u003c\/li\u003e\n\u003cli\u003eBleed blocks: 4.0 mm (Code \/ Level \/ Guide \/ G2 \/ Force AXS \/ Red AXS) and 5.0 mm (Maven)\u003c\/li\u003e\n\u003cli\u003eWrench included: Torx T10\u003c\/li\u003e\n\u003cli\u003eMade by Bleedkit.com (Ljubljana, Slovenia)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e 2x 20 ml Becton \u0026amp; Dickinson syringes, 1x M5 assembly, 1x Edge assembly, 4.0 mm bleed block for older Edge-port SRAM (2 or 4-piston), 5.0 mm bleed block for the latest SRAM Maven, Torx T10 wrench, 25 cm double-sided Velcro strap, spare O-rings, size-L nitrile gloves.\u003c\/p\u003e\n\u003ch2\u003eBleedkit, since 2011\u003c\/h2\u003e\n\u003cp\u003eBleedkit.com builds per-brake-system kits in Ljubljana, Slovenia and has done so since 2011; distribution through Euro Toolworks is the same path that brings Unior cycling tools to the North American market. Unior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The Premium Edge kit is the Edge-only kit with both blocks in the same box, which is the version a workshop running fully on modern SRAM reaches for when the Maven and Code-family bikes share the same rotation.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eThe block call on a Maven is a hardware call, not a feel call. The 5.0 mm Maven block seats against a different caliper geometry than the 4.0 mm older Edge-port block; the wrong block in a Maven caliper will sit visibly off, and the bleed feel at the lever will be unstable through the pull. If the block does not seat square against the caliper face, stop the bleed, switch blocks, and start the gravity cycle over. The block is the dimensional reference the bleed runs against; getting it right at the start is the whole job.\u003c\/p\u003e\n\u003cp\u003eWhether the Premium Edge fits your shop, or whether the Workshop SRAM (older M5 brakes still in the rotation) or the Basic Edge (block sold separately) is the better fit, is laid out in our compatibility guide: \u003ca href=\"\/blogs\/tech-tips\/which-bleed-kit-fits-shimano-r9300-sram-maven-2026\"\u003eWhich bleed kit fits Shimano R9300, Ultegra R8270, and SRAM Maven Bronze →\u003c\/a\u003e\u003c\/p\u003e","brand":"Bleedkit.com","offers":[{"title":"Default Title","offer_id":40285109059628,"sku":"BK-80025","price":54.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/BK-80025_main-photo-white_2400px.jpg?v=1651687898"},{"product_id":"bleedkit-com-bleed-kit-for-formula-cura","title":"Bleedkit.com Premium Gold Formula Cura Bleed Kit","description":"\u003cp\u003eThe Formula Cura sits outside the rest of the Formula family. Older Formula hydraulics (Oro, C1, R1, R0, K24, K18) share a Bleeding Edge-compatible caliper port and run DOT 5.1, which puts them on the SRAM Ultimate bleed bench. The Cura broke from that pattern when Formula redesigned the platform around mineral oil and a Cura-specific caliper port; the only Formula brake in current production that needs its own kit. The Premium Gold Cura kit is what Bleedkit.com built to cover it.\u003c\/p\u003e\n\u003ch2\u003eWhat's in the kit\u003c\/h2\u003e\n\u003cp\u003eA 100 ml bottle of Bleedkit.com's Gold mineral oil ships with the kit; Gold is Bleedkit's own mineral-oil formulation with a high initial boiling point and a viscosity index suited to consistent lever-feel through the bleed cycle. Two 20 ml syringes drive the bleed at the lever and caliper ends. Two M5 assemblies fit the Cura's lever-side master cylinder. A single bleed block fits both 2-piston and 4-piston Cura calipers. The kit also carries a Torx T10 wrench, spare O-rings, and a pair of size-L nitrile gloves.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe kit fits every Formula Cura generation in current production. It does not fit the older DOT-based Formula family (Oro, C1, R1, R0, K24, K18); those run DOT 5.1 and are covered by the SRAM Ultimate kit instead. It does not fit any Shimano, SRAM, Magura, or Tektro \/ TRP brake, all of which use different lever-and-caliper geometries. The fluid is included; bringing Cura service in-house from a single-bike workshop is roughly an empty-bench-to-bled-bike-in-one-box decision.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFluid: 100 ml Bleedkit.com Gold mineral oil\u003c\/li\u003e\n\u003cli\u003eSyringes: 2x 20 ml\u003c\/li\u003e\n\u003cli\u003eLever-end assemblies: 2x M5\u003c\/li\u003e\n\u003cli\u003eBleed block: fits Cura 2-piston and 4-piston\u003c\/li\u003e\n\u003cli\u003eWrench included: Torx T10\u003c\/li\u003e\n\u003cli\u003eMade by Bleedkit.com (Ljubljana, Slovenia)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e 100 ml Bleedkit.com Gold mineral oil, 2x 20 ml syringes with special plugs, 2x M5 assembly, Torx T10 wrench, spare O-rings, bleed block for Cura 2 and 4-piston calipers, size-L nitrile gloves.\u003c\/p\u003e\n\u003ch2\u003eBuilt in Ljubljana\u003c\/h2\u003e\n\u003cp\u003eBleedkit.com builds per-brake-system kits in Ljubljana, Slovenia and has done so since 2011; distribution through Euro Toolworks is the same path that brings Unior cycling tools to the North American market. Unior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The Formula Cura kit fills the gap that the SRAM Ultimate kit cannot fill: the Cura's port is Cura-only, and the fluid is mineral rather than the DOT 5.1 the rest of the Formula family runs. One kit, one brake family, one fluid.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eA Cura bleed runs in the same gravity-then-pressure cadence as a Shimano bleed, with one difference at the lever end: the Cura lever needs more dwell time at the funnel before the caliper draw, because the master-cylinder bore is smaller and the air column above the piston takes longer to walk into the funnel. The bench-timer rule we use on Shimano (settle for at least a minute after the lever finger-stroke) lengthens to closer to two minutes on the Cura. The fluid behaves cleanly once it is settled; the wait is the work.\u003c\/p\u003e\n\u003cp\u003eWhether the Cura kit is the right one for your bike, or whether you are looking at the older DOT-based Formula and need the SRAM Ultimate instead, is laid out in our compatibility guide: \u003ca href=\"\/blogs\/tech-tips\/which-bleed-kit-fits-shimano-r9300-sram-maven-2026\"\u003eWhich bleed kit fits Shimano R9300, Ultegra R8270, and SRAM Maven Bronze →\u003c\/a\u003e\u003c\/p\u003e","brand":"Bleedkit.com","offers":[{"title":"Default Title","offer_id":40285115940908,"sku":"BK-14044","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/BK-14044_main-photo-white_2400px.jpg?v=1651685834"},{"product_id":"bleedkit-com-bleed-kit-for-shimano-workshop","title":"Bleedkit.com Workshop Shimano Bleed Kit","description":"\u003cp\u003eA multi-bike Shimano shop bleeds enough levers in a season that the syringe handling itself becomes the cadence-limiting step. The Workshop Shimano kit answers that with TPX-bodied syringes in place of the harder polypropylene the basic kits use; the TPX gives a smoother plunger draw, slightly better fluid-feel at the lever-side pull, and a longer service life on the syringe body itself. The kit also carries everything for both flat-bar and drop-bar Shimano hydraulic levers, which is the second part of the workshop equation: one box covers every Shimano hydraulic on the workshop ticket-rack from XTR down through Tiagra.\u003c\/p\u003e\n\u003ch2\u003eWhat's in the kit\u003c\/h2\u003e\n\u003cp\u003eA 30 ml transparent funnel with a brass M5 thread sits at the lever end, threaded for the standard pre-2026 Shimano master cylinder. A stainless threaded plug with hanger closes the funnel between fills. The caliper end ships with a 20 ml TPX syringe and a long-lasting tube, plus a stainless tube insert that guides the tube cleanly into the bleed nipple. Two bleed blocks live in the kit, one for flat-bar Shimano (covering both 2-piston and 4-piston calipers) and one for drop-bar; a brass adapter brings the M5 funnel onto the drop-bar Dura-Ace \/ Ultegra \/ 105 \/ GRX \/ Tiagra family.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe kit fits every flat-bar Shimano hydraulic brake currently in production: XTR, XT, Saint, Zee, SLX, Deore, Alivio, Acera, Alfine, Metrea. With the brass adapter and drop-bar block, it also fits pre-2026 drop-bar Shimano: Dura-Ace, Ultegra, 105, GRX, Tiagra. It does not fit the new 2026 Dura-Ace R9300 or Ultegra R8270, which use M7 instead of M5 at the lever, and that funnel adapter sits outside this kit and is currently a separate-accessory call. Fluid is not included; the kit is designed around Shimano mineral oil.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFunnel: 30 ml transparent, brass M5 thread\u003c\/li\u003e\n\u003cli\u003eCaliper syringe: 20 ml TPX with long-lasting tube\u003c\/li\u003e\n\u003cli\u003eBleed blocks: flat-bar Shimano (2 or 4-piston) and drop-bar Shimano\u003c\/li\u003e\n\u003cli\u003eDrop-bar adapter: brass M5\u003c\/li\u003e\n\u003cli\u003eWrench included: 7 mm\u003c\/li\u003e\n\u003cli\u003eMade by Bleedkit.com (Ljubljana, Slovenia)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e 30 ml lever funnel with brass M5 thread, stainless threaded plug with hanger, 20 ml TPX caliper syringe with tube, stainless tube insert, gravity-bleed clamp, base for funnel and adapters with spare O-ring studs, bleed block for flat-bar Shimano (2 or 4-piston), bleed block for drop-bar Shimano, brass drop-bar adapter, rubberised one-side hook and loop strap (25 cm), 7 mm wrench, four spare O-rings.\u003c\/p\u003e\n\u003ch2\u003eBleedkit, in Ljubljana since 2011\u003c\/h2\u003e\n\u003cp\u003eBleedkit.com builds per-brake-system kits in Ljubljana, Slovenia and has done so since 2011; distribution through Euro Toolworks is the same path that brings Unior cycling tools to the North American market. Unior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The Workshop Shimano kit is the multi-bike version of the family: every flat-bar and drop-bar Shimano lever the workshop sees goes through the same box, which is the part the cadence math depends on.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eFor a workshop running back-to-back bleeds, the savings compound at the caliper end. Pull the caliper, mount it in a bench vise with the bleed nipple uppermost, and run the gravity-bleed clamp with the funnel pre-filled. The caliper end of the bleed cycles in under a minute per brake once you're set up; the slow part is funnel transitions between bikes, not the bleed itself. The TPX syringes survive this duty cycle in a way the basic-kit syringes don't.\u003c\/p\u003e\n\u003cp\u003eWhether the Workshop Shimano kit is sized for your shop, or whether the Premium Road or Workshop Master kits fit better, is laid out in our compatibility guide: \u003ca href=\"\/blogs\/tech-tips\/which-bleed-kit-fits-shimano-r9300-sram-maven-2026\"\u003eWhich bleed kit fits Shimano R9300, Ultegra R8270, and SRAM Maven Bronze →\u003c\/a\u003e\u003c\/p\u003e","brand":"Bleedkit.com","offers":[{"title":"Default Title","offer_id":40285116203052,"sku":"BK-28077","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/BK-28077_main-photo-white_2400px.jpg?v=1651685936"},{"product_id":"bleedkit-com-bleed-kit-for-shimano-premium","title":"Bleedkit.com Premium Shimano Bleed Kit","description":"\u003cp\u003eA flat-bar Shimano bleed is the simplest version of a hydraulic-brake service: the lever's bleed port sits where the funnel can drop straight onto it, the caliper port is accessible without removing the wheel, and the same kit handles every brake in the family from Acera up to XTR. Skipping the dropbar adapter that the road version carries keeps the Premium Shimano Bleed Kit small enough to drop into a travel toolbox, and the funnel pattern that fits every flat-bar Shimano lever in the current catalog is the part that matters.\u003c\/p\u003e\n\u003ch2\u003eWhat's in the kit\u003c\/h2\u003e\n\u003cp\u003eThe lever funnel is a 30 ml transparent syringe body with a brass M5 thread, sized to drop straight onto a flat-bar Shimano master cylinder. The caliper syringe is 20 ml with a long-lasting tube, and a stainless-steel insert guides the tube cleanly into the bleed nipple. The bleed block in the kit fits both 2-piston and 4-piston flat-bar Shimano calipers without swapping inserts.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe kit fits every flat-bar Shimano hydraulic brake currently in production: XTR, XT, Saint, Zee, SLX, Deore, Alivio, Acera, Alfine, Metrea. It does not fit drop-bar Shimano levers, which need the brass dropbar adapter and the smaller dropbar bleed block that the Premium Road Shimano kit carries. For workshops servicing both flat-bar and drop-bar Shimano, the Premium Road version is the better single-kit choice because the road kit also covers flat-bar work. The 2026 R9300 and R8270 levers are drop-bar and additionally need an M7 funnel thread; this kit fits neither.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFunnel: 30 ml transparent, brass M5 thread\u003c\/li\u003e\n\u003cli\u003eCaliper syringe: 20 ml with long-lasting tube\u003c\/li\u003e\n\u003cli\u003eBleed block: covers Shimano flat-bar 2 or 4-piston\u003c\/li\u003e\n\u003cli\u003eWrench included: 7 mm\u003c\/li\u003e\n\u003cli\u003eMade by Bleedkit.com (Ljubljana, Slovenia)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e 30 ml lever funnel with brass M5 thread, stainless threaded plug with hanger, 20 ml caliper syringe with tube, stainless tube insert, gravity-bleed clamp, base for funnel and adapters with spare O-ring studs, bleed block for flat-bar Shimano 2 or 4-piston brakes, rubberised one-side hook and loop strap (25 cm), 7 mm wrench, spare O-ring.\u003c\/p\u003e\n\u003ch2\u003eBuilt in Ljubljana, since 2011\u003c\/h2\u003e\n\u003cp\u003eBleedkit.com builds per-brake-system kits in Ljubljana, Slovenia and has done so since 2011; distribution through Euro Toolworks is the same path that brings Unior cycling tools to the North American market. Unior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The Premium Shimano kit is the lean version of the family: every piece in it fits a flat-bar Shimano lever, nothing in it is for any other brand, and the box doesn't carry parts that won't see use on an MTB Shimano service bench.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eThe single move that catches most home-mechanic bleeds in trouble is not waiting long enough for the funnel-side fluid column to settle before tapping the caliper for the second pull. A clean bleed needs the column to settle for at least a minute after the lever finger-stroke, longer if the bike's been ridden cold. Most bench timer apps work; a kitchen timer works too. The point is to wait for the air to migrate, not for the clock to reach a number that feels reasonable.\u003c\/p\u003e\n\u003cp\u003eWhether the Premium Shimano kit is the right fit for your bike, or whether you need the Premium Road, Workshop Master, or a future M7-equipped option, we walk through in our compatibility guide: \u003ca href=\"\/blogs\/tech-tips\/which-bleed-kit-fits-shimano-r9300-sram-maven-2026\"\u003eWhich bleed kit fits Shimano R9300, Ultegra R8270, and SRAM Maven Bronze →\u003c\/a\u003e\u003c\/p\u003e","brand":"Bleedkit.com","offers":[{"title":"Default Title","offer_id":40285116235820,"sku":"BK-28085","price":33.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/BK-28085_main-photo-white_2400px.jpg?v=1651685954"},{"product_id":"bleedkit-com-bleed-kit-for-magura","title":"Bleedkit.com Premium Gold Magura MT Bleed Kit","description":"\u003cp\u003eMagura's MT family does not bleed like a Shimano. The lever uses a Luer-slip funnel that twists and clicks home rather than threading in on an M5 brass cone. The caliper port takes an M6 fitting that wants its own purpose-built tube, not a Shimano flat-bar block jammed in sideways. And the fluid is mineral oil, the same broad chemistry as Shimano's mineral oil but compatible with the Magura MT seal stack the brake system is engineered around. Every piece in the Premium Gold Magura MT Bleed Kit matches that interface, with 100 ml of Bleedkit.com's Gold mineral oil included so the bleed runs without sourcing the fluid separately.\u003c\/p\u003e\n\u003ch2\u003eWhat's in the kit\u003c\/h2\u003e\n\u003cp\u003eThe lever-side syringe is 20 ml with a special plug sized to the Magura MT master cylinder. The caliper-side syringe is 20 ml with an M6 fitting and a long-lasting tube that seats into the Magura caliper port. The bleed blocks (two in the kit) are sized to the Magura MT caliper geometry. The Torx T25 wrench handles the lever-side bleed-port hardware, and a velcro strap secures the caliper syringe to a fork leg or chainstay during the bleed. The fluid included is 100 ml of Bleedkit.com's own Gold mineral oil, formulated for ultra-high-performance use in mineral-oil brake systems.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe kit fits every Magura MT brake currently in production: MT8 SL, MT8 Pro, MT7 Pro, MT5, MT4, MT4 FM, and the MT Trail family. It is mineral-oil only and will not service Shimano (different funnel pattern), SRAM (DOT fluid), or Formula Cura (Cura-specific port). For a workshop with Magura on the rotation alongside Shimano or Tektro \/ TRP, the Workshop Master Mineral Oil kit consolidates Magura + Shimano + Tektro into one box; this kit is the dedicated Magura-only answer.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eLever syringe: 20 ml with Magura-specific plug\u003c\/li\u003e\n\u003cli\u003eCaliper syringe: 20 ml with M6 fitting and long-lasting tube\u003c\/li\u003e\n\u003cli\u003eBleed blocks: 2 × Magura MT caliper geometry\u003c\/li\u003e\n\u003cli\u003eWrench included: Torx T25\u003c\/li\u003e\n\u003cli\u003eFluid included: 100 ml Gold mineral oil (Bleedkit.com)\u003c\/li\u003e\n\u003cli\u003eMade by Bleedkit.com (Ljubljana, Slovenia)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e 100 ml of Gold mineral oil, 20 ml lever-side syringe with Magura-specific plug, 20 ml caliper-side syringe with M6 fitting and tube, 2 × Magura MT bleed blocks, Torx T25 wrench, double-sided velcro strap (25 cm), spare O-ring, and a pair of size-L nitrile gloves.\u003c\/p\u003e\n\u003ch2\u003eBuilt in Ljubljana, since 2011\u003c\/h2\u003e\n\u003cp\u003eBleedkit.com has been building system-specific kits in Ljubljana, Slovenia since 2011, distributed in North America by Euro Toolworks alongside the Unior cycling-tool catalog. Unior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The Magura MT kit is the one Bleedkit.com SKU that ships with fluid in the box: 100 ml is enough for several complete bleeds, and the Gold formulation is what the kit's hardware was tested against rather than a generic mineral oil from another bottle.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eThe Luer-slip funnel on a Magura MT seats with a quarter-turn click rather than a screw-down thread. The right feel is firm engagement with no rotational play once the click sets; if the funnel rocks, the seal isn't holding and the bleed will pull air through the joint instead of out of the caliper. Test the seat by pressing down on the funnel before the fluid goes in; a clean seat stays put under thumb pressure.\u003c\/p\u003e\n\u003cp\u003eHow Magura MT fits into the broader 2026 compatibility map across Shimano and SRAM is mapped out in our compatibility walk-through: \u003ca href=\"\/blogs\/tech-tips\/which-bleed-kit-fits-shimano-r9300-sram-maven-2026\"\u003eWhich bleed kit fits Shimano R9300, Ultegra R8270, and SRAM Maven Bronze →\u003c\/a\u003e\u003c\/p\u003e","brand":"Bleedkit.com","offers":[{"title":"Default Title","offer_id":40285116432428,"sku":"BK-31030","price":38.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/BK-31030_main-photo-white_2400px.jpg?v=1651687636"},{"product_id":"bleedkit-com-bleed-kit-for-trp-tektro","title":"Bleedkit.com Premium Gold TRP\/Tektro Bleed Kit","description":"\u003cp\u003eTektro and TRP hydraulics share enough fitting geometry with Shimano that a single kit can cover both with the right adapter. The catch is the caliper-port thread: Tektro and TRP use an M6 fitting where flat-bar Shimano uses an M5, and forcing the wrong tube onto either system damages the port threads in a way that doesn't recover. The Premium Gold TRP\/Tektro Bleed Kit carries a brass M5-to-M6 adapter that bridges the two systems and ships with the bleed block sized for flat-bar Tektro \/ TRP and Shimano 2 or 4-piston calipers. For a workshop where the rotation is heavy on entry-level builds and gravel bikes coming back for warranty service, this is the one-kit answer for the mineral-oil flat-bar service mix.\u003c\/p\u003e\n\u003ch2\u003eWhat's in the kit\u003c\/h2\u003e\n\u003cp\u003eThe lever funnel is a 30 ml transparent syringe body with a brass M5 thread. The kit's distinctive piece is the brass M5-to-M6 adapter that screws onto the funnel and presents an M6 thread to the Tektro \/ TRP master cylinder. The caliper side uses a 20 ml syringe with a long-lasting tube, a stainless-steel tube insert for the bleed nipple, and a separate M6 brass tube fitting for the Tektro \/ TRP caliper port. The bleed block fits flat-bar 2 or 4-piston calipers across both Tektro \/ TRP and Shimano.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe kit fits every Tektro and TRP hydraulic flat-bar brake currently in production. It also fits all flat-bar Shimano hydraulic brakes (XTR, XT, Saint, Zee, SLX, Deore, Alivio, Acera, Alfine, Metrea) through the M5-to-M6 adapter pattern. It does not fit drop-bar Shimano levers, which need the brass dropbar adapter and the smaller dropbar block carried in the Premium Road or Workshop Master kits. The 2026 Shimano R9300 \/ R8270 drop-bar levers are outside this kit's coverage; they need the new M7 funnel thread.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFunnel: 30 ml transparent, brass M5 thread\u003c\/li\u003e\n\u003cli\u003eAdapter: brass M5-to-M6 for Tektro \/ TRP\u003c\/li\u003e\n\u003cli\u003eCaliper syringe: 20 ml with long-lasting tube\u003c\/li\u003e\n\u003cli\u003eCaliper tube fitting: M6 brass\u003c\/li\u003e\n\u003cli\u003eBleed block: covers flat-bar Tektro \/ TRP and Shimano 2 or 4-piston\u003c\/li\u003e\n\u003cli\u003eWrenches included: 7 mm, Torx T15\u003c\/li\u003e\n\u003cli\u003eMade by Bleedkit.com (Ljubljana, Slovenia)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e 30 ml lever funnel with brass M5 thread, brass M5-to-M6 adapter for Tektro \/ TRP, stainless threaded plug with hanger, 20 ml caliper syringe with tube, stainless tube insert, M6 brass tube fitting, gravity-bleed clamps, base for funnel and adapters with spare O-ring studs, bleed block for 2 or 4-piston calipers, rubberised one-side hook and loop strap (25 cm), 7 mm wrench, Torx T15 wrench, spare O-ring.\u003c\/p\u003e\n\u003ch2\u003eBuilt in Ljubljana, since 2011\u003c\/h2\u003e\n\u003cp\u003eBleedkit.com has been building system-specific kits in Ljubljana, Slovenia since 2011, distributed in North America by Euro Toolworks alongside the Unior cycling-tool catalog. Unior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The TRP \/ Tektro kit's M5-to-M6 adapter is the small brass piece that makes a single kit cover two brake systems; the rest of the kit is shared geometry with the Shimano flat-bar bench.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eTektro and TRP calipers use a slightly different bleed-port seat geometry from Shimano: the M6 tube fitting wants a deliberate snug-then-stop feel rather than the firm twist that seats a Shimano M5 fitting cleanly. Overtorqued, the M6 fitting deforms the O-ring and the next bleed leaks at the caliper. In our shop the seat that holds is firm engagement at first resistance, then a deliberate stop rather than a final hard twist.\u003c\/p\u003e\n\u003cp\u003eHow TRP \/ Tektro compatibility maps against Shimano and SRAM, including the 2026 lever-thread changes, is in our compatibility walk-through: \u003ca href=\"\/blogs\/tech-tips\/which-bleed-kit-fits-shimano-r9300-sram-maven-2026\"\u003eWhich bleed kit fits Shimano R9300, Ultegra R8270, and SRAM Maven Bronze →\u003c\/a\u003e\u003c\/p\u003e","brand":"Bleedkit.com","offers":[{"title":"Default Title","offer_id":40285117612076,"sku":"BK-40028","price":51.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/BK-40028_main-photo-white_2400px.jpg?v=1651687653"},{"product_id":"bleedkit-com-bleed-kit-for-sram-ultimate","title":"Bleedkit.com Bleed Kit for SRAM - Ultimate","description":"\u003cp\u003eSRAM's hydraulic brake family ran DOT 5.1 for years, then split: the budget-tier DB8 moved to mineral oil in 2022, and the high-end Maven followed in 2024 with SRAM's co-developed Maxima Mineral Brake Oil. The rest of the family — Code, Level, Guide, G2, and the Force \/ Red AXS road brakes — still takes DOT 5.1. The complication arrives at the caliper end too: SRAM's Bleeding Edge port spec moved to a thicker bleed block when Maven launched, and the Maven Bronze refresh in 2025–26 locked the new 5.0 mm block as the production-volume pattern. Older Code calipers still take the 4.0 mm block. Two blocks ship in the Ultimate SRAM Bleed Kit, one for each spec, so a workshop running a mixed Code-and-Maven fleet doesn't have to track which kit fits which year of caliper. The fluid call is on the mechanic — Maven and DB8 take mineral oil, everything else SRAM takes DOT 5.1.\u003c\/p\u003e\n\u003ch2\u003eWhat's in the kit\u003c\/h2\u003e\n\u003cp\u003eThe kit uses two 20 ml Becton \u0026amp; Dickinson syringes, paired with two M5 assemblies for the lever side and one Edge assembly for the Bleeding Edge caliper port. The Edge assembly seats against the modern 5.0 mm block on Maven and the older 4.0 mm block on Code with the same fitting geometry; the block change is what selects the right thickness for each caliper. The kit also includes nitrile gloves (size L), a velcro strap, and the Torx T10 wrench needed for the lever-side bleed-port hardware.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe kit fits every SRAM hydraulic brake in current production. The 5.0 mm block covers the full Maven family: Maven Ultimate, Maven Silver, Maven Bronze, and Maven Base. The 4.0 mm block covers SRAM Code (pre-Maven generations) and the broader 2-and-4-piston SRAM family from the pre-Maven era. The same block set covers the Avid Elixir, Juicy, and older-generation Avid brakes, and the kit fits older Formula hydraulics (Oro, C1, R1, R0, K24, K18) that share the SRAM-pattern fittings. The kit does not fit Formula Cura, which uses a Cura-specific port outside this kit's coverage.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCaliper syringes: 2 × 20 ml Becton \u0026amp; Dickinson\u003c\/li\u003e\n\u003cli\u003eLever assemblies: 2 × M5\u003c\/li\u003e\n\u003cli\u003eCaliper assembly: 1 × Edge (Bleeding Edge port)\u003c\/li\u003e\n\u003cli\u003eBleed blocks: 4.0 mm (older Code \/ Avid) + 5.0 mm (Maven family)\u003c\/li\u003e\n\u003cli\u003eWrench included: Torx T10\u003c\/li\u003e\n\u003cli\u003eFluid: not included. SRAM-spec \u003cstrong\u003eDOT 5.1\u003c\/strong\u003e for Code, Level, Guide, G2, Force \/ Red AXS, and Avid Elixir \/ Juicy; SRAM-spec \u003cstrong\u003eMaxima Mineral Brake Oil\u003c\/strong\u003e for Maven and DB8.\u003c\/li\u003e\n\u003cli\u003eMade by Bleedkit.com (Ljubljana, Slovenia)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e 2 × 20 ml Becton \u0026amp; Dickinson syringes, 2 × M5 lever assemblies, 1 × Edge caliper assembly, spare O-rings, bleed block for older SRAM 2 or 4-piston brakes (4.0 mm), bleed block for the latest SRAM Maven pattern (5.0 mm), Torx T10 wrench, double-sided velcro strap (25 cm), and a pair of size-L nitrile gloves.\u003c\/p\u003e\n\u003ch2\u003eBuilt in Ljubljana, since 2011\u003c\/h2\u003e\n\u003cp\u003eBleedkit.com has been building bleed kits per brake-system family in Ljubljana, Slovenia since 2011, distributed in North America by Euro Toolworks alongside the Unior cycling-tool catalog. Unior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The Ultimate kit's pair-block strategy is what keeps a shop on one SKU through a generational change at SRAM; instead of stocking two kits, the mechanic swaps the block at the caliper end.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eOn a DOT 5.1 bleed (Code, Level, Guide, G2, Force \/ Red AXS, Avid Elixir \/ Juicy), the fluid attacks paint and is hygroscopic out of the bottle. The bench surface needs a clean rag underneath before the syringe goes on, and the bottle of DOT needs to go back into a sealed container the second the bleed is complete. A DOT bleed left open to shop air for ten minutes has already absorbed enough moisture to lower the boiling point of the fluid; on a hot descent that translates to brake fade you can feel. On a Maven or DB8 bleed (Maxima Mineral Brake Oil), the contamination boundary is the opposite direction — a syringe that has touched DOT will attack the mineral-oil seal stack on contact, so a Maven kit and a DOT kit live in separate drawers or get a fresh set of syringes between fluids.\u003c\/p\u003e\n\u003cp\u003eWhether your specific SRAM caliper takes the 4.0 mm or 5.0 mm block, and how the Maven Bronze refresh changed the calculation, is covered in our compatibility walk-through: \u003ca href=\"\/blogs\/tech-tips\/which-bleed-kit-fits-shimano-r9300-sram-maven-2026\"\u003eWhich bleed kit fits Shimano R9300, Ultegra R8270, and SRAM Maven Bronze →\u003c\/a\u003e\u003c\/p\u003e","brand":"Bleedkit.com","offers":[{"title":"Default Title","offer_id":40285117972524,"sku":"BK-80035","price":63.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/BK-80035_main-photo-white_2400px.jpg?v=1651687692"},{"product_id":"bleedkit-com-bleed-kit-for-sram-workshop","title":"Bleedkit.com Bleed Kit for SRAM - Workshop","description":"\u003cp\u003eA SRAM workshop runs on two block sizes and one Edge fitting. The 4.0 mm block fits the older Code-family calipers and the Avid Elixir \/ Juicy legacy; the 5.0 mm block fits the 2024+ Maven family. Both seat against the Bleeding Edge caliper port through the same Edge assembly, which is the connector the SRAM kit is built around. Workshop Edition adds TPX-bodied syringes for the syringe-cadence math that workshops live by, plus both bleed blocks in the same box, and asks the mechanic to bring their own fluid; DOT 5.1 for the Code-family side, mineral oil for the Maven side.\u003c\/p\u003e\n\u003ch2\u003eWhat's in the kit\u003c\/h2\u003e\n\u003cp\u003eTwo 20 ml TPX syringes drive the bleed; one terminates in an M5 assembly for the SRAM lever's older M5 funnel thread, and the second can be set up with the Edge assembly for the Bleeding Edge caliper port. A second M5 assembly is included as the lever-side funnel. Both bleed blocks ship in the kit: the 4.0 mm older-style block for Code \/ Avid \/ older Formula calipers, and the latest-generation block for the modern 5.0 mm Maven caliper. A Torx T10 wrench, a 25 cm Velcro strap for tying the caliper syringe to the frame, spare O-rings, and a pair of size-L nitrile gloves complete the kit.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe kit covers every current and recent SRAM hydraulic brake: SRAM Maven (Ultimate Expert, Ultimate, Silver, Bronze), SRAM Code (RSC, R, Ultimate, Silver, Bronze), SRAM Level, Guide, G2, Force AXS, Red AXS, plus all Avid Elixir and Juicy generations and the older Formula hydraulics (Oro, C1, R1, R0, K24, K18). It does not fit Formula Cura, which uses a Cura-specific port outside the Bleeding Edge fitting pattern. The fluid call splits on the brake family: Maven and DB8 take SRAM Maxima Mineral Brake Oil; everything else SRAM takes DOT 5.1.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSyringes: 2x 20 ml TPX\u003c\/li\u003e\n\u003cli\u003eLever-end assemblies: 2x M5\u003c\/li\u003e\n\u003cli\u003eCaliper-end assembly: 1x Edge\u003c\/li\u003e\n\u003cli\u003eBleed blocks: 4.0 mm (Code \/ Avid \/ older Formula) and 5.0 mm (Maven)\u003c\/li\u003e\n\u003cli\u003eWrench included: Torx T10\u003c\/li\u003e\n\u003cli\u003eMade by Bleedkit.com (Ljubljana, Slovenia)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e 2x 20 ml TPX syringes, 2x M5 assembly, 1x Edge assembly, 4.0 mm bleed block for older SRAM (2 or 4-piston), 5.0 mm bleed block for the latest SRAM Maven, Torx T10 wrench, 25 cm double-sided Velcro strap, spare O-rings, size-L nitrile gloves.\u003c\/p\u003e\n\u003ch2\u003eBleedkit since 2011, distributed by Euro Toolworks\u003c\/h2\u003e\n\u003cp\u003eBleedkit.com builds per-brake-system kits in Ljubljana, Slovenia and has done so since 2011; distribution through Euro Toolworks is the same path that brings Unior cycling tools to the North American market. Unior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The Workshop SRAM kit is the bring-your-own-fluid version of the family: one box covers both block sizes and the Edge fitting, leaves the DOT-versus-mineral call to the mechanic at the bench, and trusts the workshop to keep its DOT syringe and mineral syringe in separate drawers.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eThe contamination rule that matters most on a SRAM bench is the one between DOT 5.1 and Maxima Mineral. A syringe that has touched DOT cannot then touch a Maven without attacking the mineral-oil seal stack; the reverse holds in the other direction. The Workshop kit ships with two M5 assemblies and one Edge assembly precisely so the shop can dedicate one path to DOT and one path to mineral, or replace the syringes between fluid jobs.\u003c\/p\u003e\n\u003cp\u003eWhether the Workshop SRAM kit fits your shop better than the Workshop DOT (which ships with the Liqui Moly DOT 5.1 included) or the Ultimate (a different feature set on the SRAM Edge family) is laid out in our compatibility guide: \u003ca href=\"\/blogs\/tech-tips\/which-bleed-kit-fits-shimano-r9300-sram-maven-2026\"\u003eWhich bleed kit fits Shimano R9300, Ultegra R8270, and SRAM Maven Bronze →\u003c\/a\u003e\u003c\/p\u003e","brand":"Bleedkit.com","offers":[{"title":"Default Title","offer_id":40285118005292,"sku":"BK-80080","price":85.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/BK-80080_main-photo-white_2400px.jpg?v=1651687707"},{"product_id":"bleedkit-com-bleed-kit-for-sram-workshop-dot","title":"Bleedkit.com Bleed Kit for SRAM - Workshop DOT","description":"\u003cp\u003eA sealed 250 ml bottle of Liqui Moly DOT 5.1 ships in the Workshop DOT kit, which is the version of the SRAM Workshop kit set up to bleed the Code-family side of the SRAM catalog with no second supply trip. DOT 5.1 is the spec fluid for SRAM Code, Level, Guide, G2, Force AXS, Red AXS, and the Avid Elixir \/ Juicy legacy. Workshop Edition adds TPX-bodied syringes and both block sizes; the included fluid closes the loop for a shop that runs primarily on the DOT side of the contamination drawer.\u003c\/p\u003e\n\u003ch2\u003eWhat's in the kit\u003c\/h2\u003e\n\u003cp\u003eTwo 20 ml TPX syringes drive the bleed. Two M5 assemblies fit the SRAM lever's M5 funnel thread, and a single Edge assembly fits the Bleeding Edge caliper port. Both bleed blocks ship in the kit: the 4.0 mm block for Code \/ Avid \/ older Formula calipers and the 5.0 mm block for the modern Maven family. A Torx T10 wrench, a 25 cm Velcro strap for the caliper syringe, spare O-rings, and a pair of size-L nitrile gloves round out the box. The fluid is a sealed 250 ml bottle of Liqui Moly DOT 5.1, which is a German-made DOT 5.1 brake fluid sized for several full SRAM bleeds per bottle.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eFor DOT 5.1 service, the kit covers every SRAM Code generation (RSC, R, Ultimate, Silver, Bronze), SRAM Level, Guide, G2, Force AXS, Red AXS, plus all Avid Elixir \/ Juicy generations and the older Formula hydraulics (Oro, C1, R1, R0, K24, K18). The kit also physically fits the modern Maven calipers and ships with the 5.0 mm block, but Maven and DB8 take SRAM Maxima Mineral Brake Oil, not DOT 5.1, so the included fluid is wrong for those brakes. Formula Cura is not covered: Cura uses a port outside the Bleeding Edge fitting pattern.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFluid: 250 ml Liqui Moly DOT 5.1, sealed bottle\u003c\/li\u003e\n\u003cli\u003eSyringes: 2x 20 ml TPX\u003c\/li\u003e\n\u003cli\u003eLever-end assemblies: 2x M5\u003c\/li\u003e\n\u003cli\u003eCaliper-end assembly: 1x Edge\u003c\/li\u003e\n\u003cli\u003eBleed blocks: 4.0 mm (Code \/ Avid \/ older Formula) and 5.0 mm (Maven)\u003c\/li\u003e\n\u003cli\u003eWrench included: Torx T10\u003c\/li\u003e\n\u003cli\u003eMade by Bleedkit.com (Ljubljana, Slovenia); fluid by Liqui Moly (Germany)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e 250 ml bottle of Liqui Moly DOT 5.1, 2x 20 ml TPX syringes, 2x M5 assembly, 1x Edge assembly, 4.0 mm bleed block for older SRAM (2 or 4-piston), 5.0 mm bleed block for Maven, Torx T10 wrench, 25 cm double-sided Velcro strap, spare O-rings, size-L nitrile gloves.\u003c\/p\u003e\n\u003ch2\u003eFrom Ljubljana, since 2011\u003c\/h2\u003e\n\u003cp\u003eBleedkit.com builds per-brake-system kits in Ljubljana, Slovenia and has done so since 2011; distribution through Euro Toolworks is the same path that brings Unior cycling tools to the North American market. Unior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The Workshop DOT kit takes the bring-your-own-fluid Workshop SRAM and closes that loop with a Liqui Moly bottle, which is the version a single-fluid SRAM shop reaches for when the fluid resupply isn't part of the weekly order.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eWhen the DOT bottle is open on the bench, the moisture rule does most of the safety work. DOT 5.1 absorbs water from atmospheric humidity, and absorbed water lowers the fluid's boiling point; the failure mode is brake fade on a long descent, not a leak. Keep the bottle's cap on when not actively drawing fluid, and the bottle out of the sun on the bench. A 250 ml bottle holds for several full bleeds before the moisture-uptake clock makes the bottle worth replacing.\u003c\/p\u003e\n\u003cp\u003eWhether the Workshop DOT, the bring-your-own-fluid Workshop SRAM, or the Ultimate kit fits your bench is laid out in our compatibility guide: \u003ca href=\"\/blogs\/tech-tips\/which-bleed-kit-fits-shimano-r9300-sram-maven-2026\"\u003eWhich bleed kit fits Shimano R9300, Ultegra R8270, and SRAM Maven Bronze →\u003c\/a\u003e\u003c\/p\u003e","brand":"Bleedkit.com","offers":[{"title":"Default Title","offer_id":40285118267436,"sku":"BK-80090","price":109.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/BK-80090_main-photo-white_2400px.jpg?v=1651687736"},{"product_id":"bleedkit-com-master-bleed-kit-for-mineral-oil-systems","title":"Bleedkit.com Workshop Gold Mineral Oil Master Bleed Kit","description":"\u003cp\u003eA shop that services mineral-oil hydraulic brakes runs into three brand families on a busy weekend: Shimano on the road and MTB bikes, Magura MT on the trail-bike rotation, and Tektro \/ TRP on the gravel and entry-level builds coming back for warranty service. Most kits cover one of those families well and the others poorly, which is why the bench ends up with two or three boxes stacked on a shelf, each missing something. The Workshop Gold Mineral Oil Master Bleed Kit collapses those three boxes into one. It carries the Shimano flat-bar block, the Shimano drop-bar block, the Magura MT blocks, the brass M5-to-M6 adapter for Tektro and TRP, and the dropbar brass adapter for the Dura-Ace through Tiagra road levers in pre-2026 form.\u003c\/p\u003e\n\u003ch2\u003eWhat's in the kit\u003c\/h2\u003e\n\u003cp\u003eThe kit's lever-side hardware is a 30 ml transparent funnel with brass M5 thread, paired with a 20 ml Luer-slip funnel for the Magura MT side. Both threaded plugs are stainless steel with a hanger so the funnel stops sit visibly off-bench during a bleed. The caliper side uses a 20 ml TPX syringe with a long-lasting tube and a stainless-steel insert that guides into the bleed nipple cleanly. The kit also includes brass M5-to-M6 adapter hardware for Tektro \/ TRP, a brass dropbar adapter for the Shimano road levers, and a Magura M6 brass fitting.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe Master Mineral Oil kit fits every Shimano hydraulic brake from the XTR \/ XT \/ Saint \/ Zee \/ SLX \/ Deore \/ Alivio \/ Acera \/ Alfine \/ Metrea flat-bar range through the pre-2026 drop-bar Dura-Ace \/ Ultegra \/ 105 \/ GRX \/ Tiagra series. It fits all Magura MT brakes (MT4, MT5, MT7, MT8 and the MT trail variants). It fits all Tektro and TRP hydraulic flat-bar brakes. It does not fit the 2026 Shimano R9300 \/ R8270 drop-bar levers, which use the new M7 funnel thread; an M7 adapter is sold separately when Bleedkit.com's workshop replacement ships. The kit is mineral-oil only and will not service SRAM DOT systems or Formula Cura.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFunnel: 30 ml transparent, brass M5 thread (Shimano + Tektro \/ TRP)\u003c\/li\u003e\n\u003cli\u003eMagura funnel: 20 ml Luer-slip\u003c\/li\u003e\n\u003cli\u003eCaliper syringe: 20 ml TPX with long-lasting tube\u003c\/li\u003e\n\u003cli\u003eWrenches included: 7 mm, Torx T25, Torx T15\u003c\/li\u003e\n\u003cli\u003eSpare O-rings: 5 pcs\u003c\/li\u003e\n\u003cli\u003eMade by Bleedkit.com (Ljubljana, Slovenia)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e all funnel and syringe hardware listed above, blocks for Shimano flat-bar 2\/4-piston and drop-bar, Magura MT blocks, M5-to-M6 brass adapter for Tektro \/ TRP, Shimano dropbar brass adapter, rubberised one-side hook and loop strap (25 cm), bleed-block clamps, and the spare O-ring set.\u003c\/p\u003e\n\u003ch2\u003eBuilt in Ljubljana, since 2011\u003c\/h2\u003e\n\u003cp\u003eBleedkit.com has been building bleed kits sized per brake system in Ljubljana, Slovenia since 2011, and is distributed in North America by Euro Toolworks alongside the Unior cycling-tool catalog. Unior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The Workshop Master kit is the Bleedkit.com SKU built for the bench where a single mineral-oil drawer handles every brand of brake that comes through the stand on the same morning.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eThe drawer-sort routine that keeps this kit fast on the bench is fluid-type first, then funnel-thread second. Mineral oil stays in one drawer with this kit, the Magura funnel laid alongside it; DOT fluid lives in a different drawer entirely. The contamination boundary that matters most isn't between brands, it's between fluid chemistries; a clean rag between jobs handles the inside-drawer transitions.\u003c\/p\u003e\n\u003cp\u003eWhich kit fits which 2026 lever generation, including the R9300 \/ R8270 M7 thread and the Maven Bronze 5.0 mm block, is in our compatibility walk-through: \u003ca href=\"\/blogs\/tech-tips\/which-bleed-kit-fits-shimano-r9300-sram-maven-2026\"\u003eWhich bleed kit fits Shimano R9300, Ultegra R8270, and SRAM Maven Bronze →\u003c\/a\u003e\u003c\/p\u003e","brand":"Bleedkit.com","offers":[{"title":"Default Title","offer_id":40285118300204,"sku":"BK-99033","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/BK-99033_main-photo-white_2400px.jpg?v=1651687753"},{"product_id":"bleedkit-com-gold-mineral-oil","title":"Bleedkit.com GOLD Mineral Oil","description":"\u003cp\u003eBleedkit.com’s own brand of ultra high performance oil for brake systems designed for use with mineral oil. It is environmentally friendly yet very stable for prolonged service intervals.\u003c\/p\u003e\n\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eExtremely high initial boiling point at 360° C \/ 680° F\u003c\/li\u003e\n\u003cli\u003eViscosity index 200\u003c\/li\u003e\n\u003cli\u003eFor the most precise and consistent braking performance\u003c\/li\u003e\n\u003cli\u003eEnvironmentally friendly, made from renewable resources\u003c\/li\u003e\n\u003cli\u003eBiodegradable according to OECD301B and 100% non water pollutant\u003c\/li\u003e\n\u003cli\u003eClassified as non-hazardous good according to transport regulations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003ca href=\"https:\/\/bleedkit.com\/gold\/\"\u003e\u003c\/a\u003eCompatibility:\u003c\/h3\u003e\n\u003cdiv\u003e\n\u003cp\u003eThis brake oil is suitable for all brakes designed for use with mineral oils: Shimano, Magura, TRP, Tektro, Formula Cura.\u003c\/p\u003e\n\u003cp\u003eNot compatible with DOT brakes (SRAM, Avid, Hayes, Hope, older type Formula).\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Bleedkit.com","offers":[{"title":"Default Title","offer_id":40285129080876,"sku":"MO-22222","price":18.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/MO-22222-white-2400px.jpg?v=1651687794"},{"product_id":"bleedkit-com-gold-oil-500ml","title":"Bleedkit.com GOLD Mineral Oil","description":"\u003cp\u003eFive hundred millilitres of Gold mineral oil is the bulk-size refill for the mineral-oil side of the workshop drawer. Gold is Bleedkit.com's own brake-fluid formulation, sized for the mineral-system catalog: Shimano hydraulic, Magura MT, Tektro and TRP, Formula Cura. The 500 ml bottle covers several full bleeds per brake and a long bench-life if stored sealed; the bulk size that a multi-bike workshop reaches for when a 100 ml bottle won't last a weekend.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHigh initial boiling point at 360°C \/ 680°F, well above DOT 5.1's 260°C \/ 500°F floor\u003c\/li\u003e\n\u003cli\u003eViscosity index 200, holding lever-feel consistency from cold-weather workshop bleeds through summer bike-park dosages\u003c\/li\u003e\n\u003cli\u003eMade from renewable resources and biodegradable to OECD 301B; classified as non-water-pollutant\u003c\/li\u003e\n\u003cli\u003eNon-hazardous good per transport regulations, which keeps it shippable through normal North American couriers\u003c\/li\u003e\n\u003cli\u003eSized for the bleed-bench drawer: 500 ml bottle, sealed cap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe fluid suits every brake designed for mineral oil: Shimano (XTR, XT, Saint, Zee, SLX, Deore, Alivio, Acera, Alfine, Metrea, plus drop-bar Dura-Ace \/ Ultegra \/ 105 \/ GRX \/ Tiagra and the 2026 R9300 \/ R8270 generation), Magura's MT family (running Royal Blood compatible), Tektro and TRP, and Formula Cura. It is not compatible with DOT brakes: SRAM Code \/ Level \/ Guide \/ G2 \/ Force AXS \/ Red AXS, Avid Elixir \/ Juicy, the older DOT-based Formula family (Oro, C1, R1, R0, K24, K18), or Hayes and Hope DOT systems. The DOT-versus-mineral split is the bench safety boundary, not just a preference: a syringe that has touched DOT cannot then touch a mineral system without attacking the seal stack.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVolume: 500 ml\u003c\/li\u003e\n\u003cli\u003eInitial boiling point: 360°C \/ 680°F\u003c\/li\u003e\n\u003cli\u003eViscosity index: 200\u003c\/li\u003e\n\u003cli\u003eBiodegradable: OECD 301B\u003c\/li\u003e\n\u003cli\u003eMade by Bleedkit.com (Ljubljana, Slovenia)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e one 500 ml sealed bottle of Bleedkit.com Gold mineral oil.\u003c\/p\u003e\n\u003ch2\u003eFrom Ljubljana, since 2011\u003c\/h2\u003e\n\u003cp\u003eBleedkit.com builds per-brake-system kits and per-system fluids in Ljubljana, Slovenia and has done so since 2011; distribution through Euro Toolworks is the same path that brings Unior cycling tools to the North American market. Unior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The 500 ml Gold bottle is the bulk-pack refill for the kits in the mineral-oil drawer; the same formulation ships at 100 ml inside the Formula Cura and Magura kits, sized to a single brake's bleed cycle.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eStorage matters more for mineral oil than most home mechanics expect. The fluid itself does not absorb water the way DOT does, but it does pick up dust and aerosol contamination from the bench environment. Keep the bottle sealed when not actively drawing fluid, and decant into a syringe rather than pouring directly from the bottle onto an open funnel; the bottle's sealed cap is the first defence against contamination, and the syringe path keeps the open-air exposure short. A 500 ml bottle stored sealed will hold its quality across a season of weekend bleeds.\u003c\/p\u003e\n\u003cp\u003eWhether the 500 ml Gold bottle is sized right for your shop or whether the 100 ml in the per-brake kits is enough is laid out in our compatibility guide: \u003ca href=\"\/blogs\/tech-tips\/which-bleed-kit-fits-shimano-r9300-sram-maven-2026\"\u003eWhich bleed kit fits Shimano R9300, Ultegra R8270, and SRAM Maven Bronze →\u003c\/a\u003e\u003c\/p\u003e","brand":"Bleedkit.com","offers":[{"title":"Default Title","offer_id":40285118660652,"sku":"MO-22555","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/MO-22555-white-2400px_1160x_3393714a-0101-4cbe-b2cd-e666c8a33497.jpg?v=1664474371"},{"product_id":"bottom-bracket-bearing-press-kit-1721bb","title":"Bottom Bracket Bearing Press Kit - 1721BB","description":"\u003cp\u003ePress-fit bottom brackets behave the way they're supposed to only when they're installed straight. A bearing pressed in cocked, even by a degree or two, runs with side-load on the bearing race; the bearing rolls rough out of the box, develops a flat spot on the load side within a few hundred miles, and starts the creak-knock-replace cycle that gives press-fit BBs their reputation.\u003c\/p\u003e\n\u003cp\u003eThe 1721BB is the kit that takes the geometry guess out of the install. The press-rod centres the drift to the BB shell; the drifts are sized to the bearing's outer race so the press load lands on the race surface, not on the seal or the cage. The result is a square install on the first try, every time, without the part-of-bearing damage that makes press-fit BBs unforgiving.\u003c\/p\u003e\n\u003ch2\u003eHow it's used\u003c\/h2\u003e\n\u003cp\u003eIdentify the BB standard in the frame (BB30, PF30, BB86, BB92, BSA30 press-fit, etc.) and select the matching drift from the kit. The kit ships with drifts sized to the most common press-fit standards, packaged in a tray that shows immediately whether anything is missing.\u003c\/p\u003e\n\u003cp\u003eThread the press rod through the BB shell from the non-drive side. Place the appropriate drift over the bearing on each side. Tighten the press rod to draw the drifts toward each other; the bearings press into the BB shell at matched depth, both sides simultaneously. The simultaneous double-side install is what keeps the bearings square to each other; pressing one side at a time and then the other lets the second bearing pull misaligned to the first.\u003c\/p\u003e\n\u003cp\u003ePress the bearings to the manufacturer's depth. For most current press-fit BBs, that's flush to the shell shoulder; for some Trek and Cannondale designs, a small offset is specified. Verify against the frame's published spec before pressing.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBB30 \/ PF30 \/ PF30A (press-fit 30 mm spindle, 42 mm shell)\u003c\/li\u003e\n\u003cli\u003eBB86 \/ BB92 (press-fit 24 mm Shimano-pattern spindle)\u003c\/li\u003e\n\u003cli\u003eMost other current press-fit BB standards using common drift sizes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot for\u003c\/strong\u003e threaded BBs (BSA, BSA30 threaded, T47, Italian); for those use the appropriate notched-cup wrench like the \u003ca href=\"\/products\/16-notch-bottom-bracket-wrench\"\u003e16 Notch External BB Wrench (1609\/2BI-US)\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePress rod and drifts:\u003c\/strong\u003e premium flex plus carbon steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurface finish:\u003c\/strong\u003e chrome-plated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrift sizing:\u003c\/strong\u003e common press-fit BB standards (BB30, PF30, BB86, BB92, BSA30 press-fit)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e press rod, drift set sized to common standards, packaging case for organised storage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt in Zreče\u003c\/h2\u003e\n\u003cp\u003eUnior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The 1721BB is the kit that takes a press-fit BB install from a guess to a procedure; the simultaneous double-side press is what separates a bearing that lasts the design life from one that develops a flat spot in the first month.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eA creak from a press-fit BB isn't always the bearing. Before pressing in a fresh BB, clean the BB shell threads (or shell bore, on press-fit) thoroughly and inspect the bore for ovality with calipers. A worn or oval shell will reproduce the creak on the new BB regardless of how square the press is. If the bore is worn past spec, the next step is a frame-warranty conversation with the manufacturer rather than another BB install.\u003c\/p\u003e\n\u003cp\u003eFor the diagnostic order on BB-area noise (what to rule out before assuming the BB is the source), see \u003ca href=\"\/blogs\/tech-tips\/creaky-bottom-bracket-check-these-first\"\u003eCreaky bottom bracket? Check these first →\u003c\/a\u003e.\u003c\/p\u003e","brand":"Unior","offers":[{"title":"Default Title","offer_id":41189132763180,"sku":"629167","price":229.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/files\/Bottom-Bracket-Bearing-Press-Kit.jpg?v=1732110825"},{"product_id":"chain-wear-indicator-1644-6","title":"Chain Wear Indicator - 1644\/6","description":"\u003cp\u003eA chain doesn't tell you it's worn. It elongates a few thousandths of a millimeter at every pin, and by the time the cassette starts skipping under load the damage is already done. The Chain Wear Indicator 1644\/6 is the small tool that catches the moment before that happens. Drop it into the chain, push down gently, and the gauge gives you a yes-or-no answer in about three seconds.\u003c\/p\u003e\n\u003cp\u003eThe reason this one reads the chain honestly is the three-point geometry. Most wear gauges register pin-to-pin distance and call it elongation, but a chain with worn-out rollers and tight pins reads false-positive on a two-point tool: the rollers sit loose against the gauge, and the gauge drops in. The 1644\/6 uses a three-point design that isolates pin elongation from roller wear, so the reading reflects the actual chain-stretch number rather than the sloppier proxy.\u003c\/p\u003e\n\u003ch2\u003eHow to read it\u003c\/h2\u003e\n\u003cp\u003eTwo thresholds are stamped on the tool, one at each end:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.5% side\u003c\/strong\u003e for \u003cstrong\u003e11-, 12-, and 13-speed\u003c\/strong\u003e chains. Modern narrow-spaced chains start damaging the cassette before they hit 0.75%, so the replacement trigger moves earlier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.75% side\u003c\/strong\u003e for \u003cstrong\u003e6- through 10-speed\u003c\/strong\u003e chains. The wider cog spacing gives the chain a little more room before the deformation cascade starts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf the 0.5% side drops in on an 11-speed chain, the chain goes. If the 0.75% side drops in on a 9-speed chain, same call. If neither drops in, the chain is still inside its service window. A QR code on the body links to a usage video for the moments when the answer feels closer than that.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eEvery 6- to 13-speed derailleur chain in current production, including SRAM AXS flat-top chains. The three-point design is geometry-agnostic; what differs across speeds is the threshold to read against, not the way the tool sits in the chain.\u003c\/p\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e6-13 speed derailleur chains; SRAM flat-top\u003c\/li\u003e\n\u003cli\u003ePrecision laser-cut steel\u003c\/li\u003e\n\u003cli\u003e178 × 45 × 29.4 mm\u003c\/li\u003e\n\u003cli\u003e20 g\u003c\/li\u003e\n\u003cli\u003eArticle number: 1644\/6\u003c\/li\u003e\n\u003cli\u003eQR code with video usage instructions printed on the body\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt in Zreče, Slovenia\u003c\/h2\u003e\n\u003cp\u003eUnior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The dual-threshold pair stamped on the 1644\/6 matches what current chain manufacturers publish for narrow-spaced and legacy drivetrains; the three-point geometry is the design call that makes the tool useful at both ends. It's a small piece of laser-cut steel that does one job, and it does it more accurately than the gauge in the bottom of your toolbox.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eThe 0.5% vs. 0.75% split is where most home mechanics get the call wrong; the older single-threshold gauges are calibrated to swap a chain \u003cem\u003elater\u003c\/em\u003e than a modern 11- or 12-speed drivetrain wants. The 1644\/6 reads the right threshold for the right chain, but knowing which threshold applies to which bike is the part that's not on the tool. Our chain-replacement guide covers when each threshold applies, what's happening to the cassette teeth in the gap between them, and how to break and reinstall cleanly once the call is made: \u003ca href=\"\/blogs\/tech-tips\/when-and-how-to-replace-your-chain\"\u003eWhen and how to replace your chain →\u003c\/a\u003e\u003c\/p\u003e","brand":"Unior","offers":[{"title":"Default Title","offer_id":41522029854764,"sku":"629344","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/files\/Chain-wear-indicator-Square.jpg?v=1723632449"},{"product_id":"cassette-wrench-1670-2bi-us-copy","title":"Cassette Wrench 13\/14t","description":"\u003cp\u003eThe 13\/14t cassette wrench is the version sized for cassettes whose smallest cog is bigger than the modern road \/ MTB standard; older derailleur cassettes from the 7-, 8-, and 9-speed era, classic touring builds where the spread starts at a 13 or 14 small cog for the lower gear range, and some BMX-style cassettes that share the larger small-cog convention. Three steel pins engage the cog directly, and a 350 mm handle gives you the leverage to break a lockring loose without a chain whip.\u003c\/p\u003e\n\u003cp\u003eThe reason these cassettes still come into shops in numbers is that classic and touring drivetrains don't wear out the way modern ones do. A 7-speed touring cassette with a 13-tooth small cog can run a decade on a properly-maintained chain, and when the cassette finally does need changing, the chain whip in the drawer that fits a 12-speed road bike won't engage cleanly on the larger cog teeth. The 13\/14t wrench is the version that does.\u003c\/p\u003e\n\u003cp\u003eThree pins land in three separate tooth gaps and hold the cassette positive against the lockring tool's torque. The pins are notched, the same as the 11\/12t version, so a stuck lockring can't pop the tool off the cog under load.\u003c\/p\u003e\n\u003ch2\u003ePicking between the cassette wrenches\u003c\/h2\u003e\n\u003cp\u003eThe 13\/14t is one of three Unior cassette wrench sizes. The decision is small-cog tooth count:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e10 teeth (SRAM AXS X-Range)\u003c\/strong\u003e; \u003ca href=\"\/products\/cassette-wrench-1670-2bi-us-copy-copy\"\u003eCassette Wrench X Range\u003c\/a\u003e. The 13\/14t pins won't seat on a 10-tooth cog.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e11 or 12 teeth (most modern road \/ MTB)\u003c\/strong\u003e; \u003ca href=\"\/products\/cassette-wrench\"\u003eCassette Wrench 11\/12t\u003c\/a\u003e. The standard workshop pick.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e13 or 14 teeth (older cassettes, touring, some BMX)\u003c\/strong\u003e; this version. Pin spacing matches the larger cog teeth.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhen in doubt, count the teeth on the smallest cog. The cassette spec usually has it written on the lockring face or the cassette body itself.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eShimano HG cassettes with 13- or 14-tooth small cogs (older 7-, 8-, 9-speed touring; pre-2010 MTB)\u003c\/li\u003e\n\u003cli\u003eSRAM HG cassettes with 13- or 14-tooth small cogs\u003c\/li\u003e\n\u003cli\u003eSunrace and Microshift cassettes with 13- or 14-tooth small cogs\u003c\/li\u003e\n\u003cli\u003eBMX cassettes with 13- or 14-tooth small cogs\u003c\/li\u003e\n\u003cli\u003eNot for 10-, 11-, or 12-tooth small cogs (see other Unior cassette wrenches)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThree pin engagement on the small cog\u003c\/li\u003e\n\u003cli\u003eNotched pins for slip resistance under load\u003c\/li\u003e\n\u003cli\u003e350 mm handle for full lockring break-free leverage\u003c\/li\u003e\n\u003cli\u003eSized for 13- or 14-tooth small cog cassettes\u003c\/li\u003e\n\u003cli\u003eArticle number: 1670\/2BI-US (13\/14t variant)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt in Zreče, Slovenia\u003c\/h2\u003e\n\u003cp\u003eUnior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. The 13\/14t wrench is the older end of the cassette-wrench range, and we kept it in the catalog because the cassettes it fits keep coming in. Touring bikes from the 1990s, vintage road builds being refurbished, BMX shop bikes with full-size sprockets; the larger small-cog convention isn't extinct, and the right tool for those cassettes is still worth having on the bench.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eIf your shop does any vintage-bike service or touring rebuild work, the 13\/14t version is the one that lives in the second cassette-tool drawer. New retail bikes won't bring it out, but a 1995 Trek 520 with a 7-speed touring cassette and a stuck lockring will. Pair it with the \u003ca href=\"\/products\/shimano-cassette-lock-ring-tool\"\u003eShimano\/SRAM Cassette Lockring Tool 1670.5\/4\u003c\/a\u003e on a 1\/2\" ratchet, and the cassette swap on a 30-year-old bike runs the same as on a current one. The cassette-replacement workflow has more on legacy drivetrains: \u003ca href=\"\/blogs\/tech-tips\/when-and-how-to-replace-your-cassette\"\u003eWhen and how to replace your cassette →\u003c\/a\u003e\u003c\/p\u003e","brand":"Unior","offers":[{"title":"13\/14t","offer_id":44140823805996,"sku":"624967","price":37.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/1670_2bi-us.jpg?v=1642722383"},{"product_id":"cassette-wrench-1670-2bi-us-copy-copy","title":"Cassette Wrench X Range","description":"\u003cp\u003eSRAM's X-Range gearing dropped the small cog to 10 teeth across AXS road, AXS XPLR gravel, and Eagle Transmission MTB cassettes. The 10-tooth cog is what lets X-Range run a single-chainring drivetrain with the range of a 2×; but it's also too small for a chain whip or a conventional cassette wrench to engage cleanly. The X Range cassette wrench is the version sized for the 10-tooth small cog, with three steel pins that land in the cog's narrow tooth gaps and a 350 mm handle for the leverage to back the lockring out.\u003c\/p\u003e\n\u003cp\u003eWorking on X-Range cassettes without the right holder is the slow way to round teeth. A chain whip wrapped around a 10-tooth cog sits on three or four teeth at most; under the torque the lockring takes to break free, the chain walks, the cog teeth roll, and the chain ends up pulled into the cassette body. The pin-engagement design avoids the walking; the three pins seat in three distinct tooth valleys, the load distributes evenly, and the cog teeth stay flat.\u003c\/p\u003e\n\u003cp\u003eThe wrench is specifically for X-Range. The pin spacing on this version is tighter than the standard 11\/12t or 13\/14t wrench; trying to use the X Range wrench on a conventional 11- or 12-tooth small cog won't seat the pins right, and trying to use the 11\/12t version on a 10-tooth cog won't seat at all. The three Unior cassette wrenches don't overlap; they tile the small-cog range from 10 teeth to 14 teeth.\u003c\/p\u003e\n\u003ch2\u003eWhat counts as X-Range\u003c\/h2\u003e\n\u003cp\u003eSRAM's X-Range cassettes include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRed AXS, Force AXS, Rival AXS, Apex AXS road\u003c\/strong\u003e; 10-26, 10-28, 10-30, 10-33, 10-36 cassettes (the leading \"10\" is the small cog)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAXS XPLR gravel\u003c\/strong\u003e; 10-44, 10-46, 10-52 cassettes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEagle Transmission MTB\u003c\/strong\u003e; XX SL, XX, X0, GX, S1000 12-speed T-Type cassettes (10-52 standard)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEagle AXS\u003c\/strong\u003e; 10-50, 10-52 cassettes (pre-Transmission)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor SRAM 11- and 12-speed cassettes with an 11-tooth small cog (older Eagle, GX 11-speed, road 1× pre-AXS), the \u003ca href=\"\/products\/cassette-wrench\"\u003e11\/12t version\u003c\/a\u003e is the right pick.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.sram.com\/en\/life\/stories\/x-range-gearing\"\u003eSRAM X-Range gearing reference\u003c\/a\u003e covers the rationale for the 10-tooth design; narrower side-to-side chain geometry, larger jumps between cogs, wider total range from one chainring.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSRAM AXS road cassettes (10-tooth small cog): Red, Force, Rival, Apex\u003c\/li\u003e\n\u003cli\u003eSRAM AXS XPLR gravel cassettes\u003c\/li\u003e\n\u003cli\u003eSRAM Eagle Transmission (T-Type) MTB cassettes\u003c\/li\u003e\n\u003cli\u003eSRAM Eagle AXS 12-speed MTB cassettes\u003c\/li\u003e\n\u003cli\u003eNot for SRAM HG or XD\/XDR cassettes with 11- or 12-tooth small cogs (use \u003ca href=\"\/products\/cassette-wrench\"\u003e11\/12t\u003c\/a\u003e)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThree pin engagement on the 10-tooth small cog\u003c\/li\u003e\n\u003cli\u003eNotched pins for slip resistance under load\u003c\/li\u003e\n\u003cli\u003e350 mm handle for full lockring break-free leverage\u003c\/li\u003e\n\u003cli\u003eX-Range-specific pin spacing\u003c\/li\u003e\n\u003cli\u003eArticle number: 1670\/2BI-US (X-Range variant)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuilt in Zreče, Slovenia\u003c\/h2\u003e\n\u003cp\u003eUnior has been forging hand tools in Zreče since 1919, and is the official technical partner of multiple World Tour and downhill teams. SRAM's X-Range gearing was a real drivetrain change; the 10-tooth small cog needs a cassette wrench sized to it, not a workaround on an 11\/12t tool. The X Range cassette wrench is the third member of the Unior cassette-wrench family, sized to match the cog size SRAM moved the field to.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eMost workshops doing AXS service ended up buying an X-Range wrench within a season of the cassette pattern shipping in volume; the cog-rounding risk on a chain-whip workflow with 10-tooth small cogs convinced people fast. If your shop only sees AXS occasionally, the wrench is a one-purchase fix for every X-Range cassette swap from now on. For workshops handling Eagle Transmission specifically, this wrench is the cassette-side tool that pairs with the \u003ca href=\"\/products\/1660-2dp-us-multispeed-chainwhip\"\u003eMultispeed Chainwhip 1660\/2DP-US\u003c\/a\u003e (which also covers Flattop) when the chain whip is preferred on the larger cogs. The cassette-replacement workflow covers the X-Range workflow end-to-end: \u003ca href=\"\/blogs\/tech-tips\/when-and-how-to-replace-your-cassette\"\u003eWhen and how to replace your cassette →\u003c\/a\u003e\u003c\/p\u003e","brand":"Unior","offers":[{"title":"X-Range","offer_id":44140824068140,"sku":"629061","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/products\/1670_2bi-us.jpg?v=1642722383"}],"url":"https:\/\/uniorusa.com\/collections\/sale.oembed?page=2","provider":"Unior USA","version":"1.0","type":"link"}