Cassette Wrench 13/14t

The 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.

The 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.

Three 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.

Picking between the cassette wrenches

The 13/14t is one of three Unior cassette wrench sizes. The decision is small-cog tooth count:

• 10 teeth (SRAM AXS X-Range); Cassette Wrench X Range. The 13/14t pins won't seat on a 10-tooth cog.
• 11 or 12 teeth (most modern road / MTB); Cassette Wrench 11/12t. The standard workshop pick.
• 13 or 14 teeth (older cassettes, touring, some BMX); this version. Pin spacing matches the larger cog teeth.

When 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.

Compatibility

• Shimano HG cassettes with 13- or 14-tooth small cogs (older 7-, 8-, 9-speed touring; pre-2010 MTB)
• SRAM HG cassettes with 13- or 14-tooth small cogs
• Sunrace and Microshift cassettes with 13- or 14-tooth small cogs
• BMX cassettes with 13- or 14-tooth small cogs
• Not for 10-, 11-, or 12-tooth small cogs (see other Unior cassette wrenches)

Specs

• Three pin engagement on the small cog
• Notched pins for slip resistance under load
• 350 mm handle for full lockring break-free leverage
• Sized for 13- or 14-tooth small cog cassettes
• Article number: 1670/2BI-US (13/14t variant)

Built in Zreče, Slovenia

Unior 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.

Pro tip from our mechanics

If 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 Shimano/SRAM Cassette Lockring Tool 1670.5/4 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: When and how to replace your cassette →