Wheels MFG T47 ABEC-3 Bottom Bracket for Shimano GSDA This combination of design characteristics

This combination of design characteristics produces a cage that has better retention on gravel and other harsh surfaces and has proven to be the superior design when mounted on the underside of the down tube

With the Shimano Deore BR-MT410 Rear Disc Brake and BL-MT401 Right Lever

but wouldn't look out of place anywhere

larger riders and those who prize stiffness and responsiveness

smoother shifting

Wheels MFG T47 ABEC-3 Bottom Bracket for Shimano GSDA This combination of design characteristicsT47 threaded BB cups for T47 frames and 24. 00mm spindle diameter 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 crank spindle. T47 BB cups are