{"product_id":"aluminum-bottom-bracket-socket-bsa30-threaded-bb30","title":"Aluminum Bottom Bracket Socket BSA30 (Threaded BB30)","description":"\u003cp\u003eBSA30 is the threaded variant of the 30 mm-spindle BB family. Same 1.37\" × 24 TPI shell threading as standard BSA (so it threads into a regular BSA frame), but the cups are bored for a 30 mm spindle instead of 24 mm. Race Face Cinch, Praxis M30, Rotor 30 mm cranksets, and other 30 mm-spindle cranks that need a threaded-shell installation use BSA30 cups in BSA-threaded frames. \u003cstrong\u003eThere is no ”BSA30 press-fit“ variant\u003c\/strong\u003e; the press-fit equivalents for a 30 mm spindle are PF30 (42 mm shell ID, 68 or 73 mm shell width) or PF30A (Cannondale's offset variant).\u003c\/p\u003e\n\u003cp\u003eThe 1671 Aluminum BB Socket cut for BSA30 fits the cup's outer notch profile cleanly without the rocking play that a generic 16-notch socket allows on a slightly different geometry. The aluminum body matches the cup's hardness; the engagement is tight enough that the splines don't lift under the 35–50 Nm install torque a 30 mm-spindle threaded cup wants.\u003c\/p\u003e\n\u003ch2\u003eWhy a separate socket exists for BSA30\u003c\/h2\u003e\n\u003cp\u003eA 30 mm-spindle threaded cup is dimensionally different from a 24 mm-spindle HT2 cup, even though both thread into BSA-pattern frames. The notch outer profile, the cup OD, and the depth at which the notches sit relative to the frame face are all slightly different. A standard 16-notch HT2 wrench will \u003cem\u003eengage\u003c\/em\u003e on a BSA30 cup; but with reduced contact area, which is what rounds the notches under torque. The dedicated BSA30 socket eliminates that risk by sizing to the cup's actual geometry.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBSA30 cups (Race Face Cinch, Praxis M30, Rotor 30 mm in BSA-threaded frames)\u003c\/li\u003e\n\u003cli\u003eCups bored for 30 mm spindle with 16-notch outer engagement at the BSA30 OD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot for\u003c\/strong\u003e PF30 \/ PF30A press-fit shells; those need a press-fit BB removal tool, not a socket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot for\u003c\/strong\u003e standard BSA (24 mm spindle); use the 16-notch generic or BBR60 socket\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecs\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive:\u003c\/strong\u003e 1\/2\" square drive (use with a torque wrench, ratchet, or fixed handle such as the Pro Socket Handle)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e CNC-machined aluminum, red-anodized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNotch fit:\u003c\/strong\u003e BSA30 outer profile\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e the socket itself; pair with the \u003ca href=\"\/products\/bottom-bracket-socket-retaining-tool\"\u003eBottom Bracket Socket Retaining Tool\u003c\/a\u003e for low-profile cup engagement\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 sponsors professional road and mountain-bike race teams. The BSA30 socket is the cleanest example of why the 1671 family is cut to the specific cup pattern, not to a generic envelope: 30 mm-spindle BB cups landed in shops without a dedicated socket for most of the last decade, and shops worked around it with marred cups and rough notches. The BSA30-specific tool retires that workaround.\u003c\/p\u003e\n\u003ch2\u003ePro tip from our mechanics\u003c\/h2\u003e\n\u003cp\u003eThe most common BSA30 confusion in the shop is the threaded-vs-press-fit question. The BB30 standard (no “BSA” prefix) is press-fit at 42 mm shell ID, no threading involved; BSA30 keeps the BSA threading and just bores the cups for a 30 mm spindle. If the frame's BB shell has threading visible at the entry, it's BSA30; if the shell is unthreaded, it's BB30 \/ PF30 and this socket won't apply; the \u003ca href=\"\/products\/bb30-bearing-puller-1625-2\"\u003eBB30 Bearing Puller\u003c\/a\u003e handles the press-fit case.\u003c\/p\u003e\n\u003cp\u003eFor the install \/ remove procedure and torque values: \u003ca href=\"\/blogs\/tech-tips\/replace-or-clean-your-hollowtech-ii-bottom-bracket\"\u003eReplace or clean your bottom bracket →\u003c\/a\u003e.\u003c\/p\u003e","brand":"Unior","offers":[{"title":"BSA30","offer_id":44140853461036,"sku":"627621","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0012\/5786\/5260\/files\/1671.bsa30_627621_image_1024.jpg?v=1747302571","url":"https:\/\/uniorusa.com\/products\/aluminum-bottom-bracket-socket-bsa30-threaded-bb30","provider":"Unior USA","version":"1.0","type":"link"}