Wheels MFG T47 Angular Contact Bottom Bracket for SRAM GXP Cranks BF Apparel Gutter Seal Technology drastically improves

Gutter Seal Technology drastically improves sealing against the elements while reducing seal drag

Low weight with good puncture protection

4mm and 31

reactive and springy for efficient power transfer

SHIMANO's SM-JC41 Junction B is the central connector for DI2 systems

Wheels MFG T47 Angular Contact Bottom Bracket for SRAM GXP Cranks BF Apparel Gutter Seal Technology drastically improves*** INBOARD VERSION *** T47 threaded BB cups for T47 frames and 22 24mm spindle diameter SRAM GXP cranks. Cups have internal bearings, and are typically used in BB shells with widths wider than 73mm. Machined aluminum cups thread together directly into a T47 BB shell. Bearings are easily serviced or replaced. Includes sleeve to fit between cups for added protection from dirt and grime, and also keeps your internal wires and hoses from rubbing on the