BSA-ROAD-GXP for Sram GXP cranks cranktype-M30 or choose cross seals if

or choose cross seals if you frequently tackle gravel

or taking a break

making it an ideal upgrade for road racers

right next to the crank arms

While Trek T47 internal bottom brackets are 1mm narrower than standard 86

BSA-ROAD-GXP for Sram GXP cranks cranktype-M30 or choose cross seals ifThis bottom bracket fits a Sram GXP crank on a classic BSA threaded road frame. Choose road seals for road use. Choose cross seals for gravel, CX, and commuter bikes or if you frequently ride on wet roads. For installation, use a 16 notch tool with an internal diameter of 42. 7mm (measured at the inside of the notches). This is your most traditional tool for BSA bottom brackets, previously used by Sram GXP, Chris King, Campagnolo and older style