Your Fit Kit extends the lifespan of your bottom bracket and cranks, reduces noise, and allows you to use a bottom bracket with a variety of cranks if you value that.

Fit Kit #2 DUB B is designed for ThreadFit 30 with DUB road cranks.

For DUB mountain cranks, there are a few additional adjustment notes to keep in mind. If you have a 68 mm bottom bracket shell, you will need two 2.5 mm cup spacers (PBB008B for BSA, PBB078 for T47).

For DUB Super Boost + cranks, you will need an additional spindle spacer kit (PBB081).