Trek BB90 for Sram GXP cranks Bearing Type:Ceramic Bearings This set replaces the bolts

This set replaces the bolts that hold the upper and lower pulley

Please note that installing this oversized derailleur cage typically requires replacing your chain to accommodate the larger pulleys

Bolt-on speed—so fast it's almost cheating

and you’re ready to hit the road or trails

It will fit most 30mm crank spindles on a PF30 frame

Trek BB90 for Sram GXP cranks Bearing Type:Ceramic Bearings This set replaces the boltsThis bearing set is ready to plug a Sram GXP crank in a Trek BB90 road frame. BB90 was used on Trek's carbon road frames pre 2021. For current carbon road and gravel frames, look at T47 Internal. For aluminum frames and mountain bikes, have a look at the BB86 BB92 collection. Choose road bearings for road bikes, cross bearings for cyclocross or if you frequently ride your road bike on wet roads.