Chris King bottom brackets utilize Fit Kits toensure that cranks mate perfectly with our precision bearings, extend product life, and reduce the potential for noise. Fit Kits will also allow you to use one bottom bracket with a wide array of cranks, if you happen to change you cranks in the future.

Fit Kit #2 DUB B is for ThreadFit 30 bottom bracketsusing SRAM DUB road cranks.