Description
Bottom bracket BB90 Trek 37X90.5 for Shimano, FSA, Rotor 24mm For BB90 frames diameter 37, box width 90.5mm For Shimano, FSA, Rotor axis 24mm . CS bearings last 3 times longer than other bearings. Ceramic balls 100% smoother and 15% harder than the ceramic competition. Average drag reduction of 75% compared to most BB's Contents: 2 BB90 bearings / 2 seals / 2 protective covers with integrated spacers / 1 syringe 10ml of All Round grease / 1 sticker