TRUVATIV SRAM Innenlager GXP XR BSA für Tandem schwarz
Original SRAM GXP Bottom Bracket BSA 68/73mm MTB & Road Bicycle Central Movement for 24 22mm Axle Crankset Bike Parts|Bicycle Crank & Chainwheel| - AliExpress
How to replace a GXP - Bottom Bracket | ENDURO Mountainbike Magazine