The SRAM BB30 Bottom Bracket Assembly allows you to use a SRAM drivetrain with frame designs that feature the light and stiff performance of this oversized standard The kit includes two sets of steel bearings and mounting hardware for SRAM cranks and bikes with a BB30 bottom bracket shell Key Features BbFrame Interface Bb30 Bb30 Road Wide 73mm Bb30 Road 73mm Bb30 83A Dub CrankBb Interface Standard Bearing Type Dub Spindle Diameter Aluminum Cup Material

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