BBB BottomAdapt BB30/PF30 To 24mm Shimano Reducer 30-24mm Black BBO-16 BBB BottomAdapt BB30/PF30 To 24mm Shimano Reducer 30-24mm Black BBO-16. PF30 to 24mm reducer. Allows the installation of 24 mm spindle crank sets into BB30 and PF30 bottom bracket shells (BB30 or PF30 Bottom Bracket required).
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