Expand your choice of cranks for use in frames with 41mm ID shells. Replace your bottom bracket with these dual-row flanged bearings and run 30mm spindle cranks in your frame. These bearings fit directly in frames with 41mm ID bottom bracket shells. Crankset spindle length must be longer than 104mm when used in a 86.5mm wide BB shell. Features:- Complete kit for one frameIncludes:- (2) - Enduro BB86 to 30MM Dual-Row ABEC-3 Bearing- (2) - 0.5mm crank spacer- (2) - 1.0mm crank spacer- (2) - 5.0mm crank spacer- (2) - Dust seals