This kit includes the required spacers to properly fit 12x157mm SuperBoost Frames.

Chris King bottom brackets utilize Fit Kits toensure that cranks mate perfectly with their precision bearingswhich extends product life and reduces 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 your cranks in the future.

Fit Kit #1 DUB Ais for ThreadFit 30 bottom bracketsusingSRAM DUB mountain cranks.