BB30->BSA Bottom Bracket Conversion Adapter/Convertor. Convert BB30 to BSA,BB68/73,BB51,BB52,BB70. Bicycle GUB BSA BB-68-73 Bottom Bracket Fit GXP/FSA/Raceface Bike. 2PCS BSA30 Bottom Bracket-BB30/30mm Axle on BSA Fit FSA/ROTOR 3D/SRAM bsa68/73.
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