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

Item Specifications

• BB Shell Width (mm): 68
• BB Shell Width (mm): 73
• BB/Frame Interface: English
• Bottom Bracket Shell I.D.: 1.37
• Defined Color: Black
• Spindle Interface Type: Shimano Hollowtech II