Trek BB90 GXP Bearings

Info Installation Instructions Video Specifications JUST THE FACTS: BB90 is the mountain bike version of Trek's proprietary Direct-in-frame bottom bracket system. No cups or extra hardware required. With Trek BB90, the bearings press directly into the frame. Our Trek BB90 GXP bearings work with all GXP road bike crank systems from Sram and other manufacturers no matter how many chain rings you run. How do I know if my bike needs a Repair Kit or a Standard Kit? If a bearing or both bearings are loose in the frame bottom bracket shell while you are riding and/or can be installed or removed by hand with little effort when the crank has been removed from the bike, you need our REPAIR KIT. If the bearings are snug in your frame’s bottom bracket shell, and you need to knock the bearings out mechanically, and need to use a press to install the bearings, order our STANDARD KIT. What’s the difference between a REPAIR KIT and the STANDARD KIT? Short Answer: The Standard Kit uses VibraTi