Shimano Shimano BB-MT501 English Bottom Bracket - English, 68/73mm, Fits Hollowtech II Spindle, Black

The Shimano BB-MT501 bottom bracket for Hollowtech II provides better sealing and rotation to delivery high driving efficiency.

English (BSA) threaded bottom bracket
Fits 68 and 73mm frame bottom bracket shells
For use with MTB
Aluminum threaded cups