Blank mid bottom bracket kitblanks mid bottom bracket kit offers a super smooth replacement bottom bracket to rival those at higher price points coming with precision sealed bearings and alloy bearing covers this mid bottom bracket kit suits all frames with a mid bottom bracket shell quick and easy to install youll be back on the road in no time featuresfits all frames with a mid bottom bracket shellprecision sealed bearingsalloy bearing covers includedweight tbabuyblank componentsfro