Shimano XTR SM-BB90-A Bottom Bracket Cups Dyna-Sys Compatibility

SM-BB90-A Bottom Bracket Cups

• Wider bearing spacing for greater stability
• Consistently smooth rotation
Shimano XTR FC-M980 and M985 Bottom Bracket.

- BB Shell Width: 68 mm/73 mm
- Spindle Interface Type: Hollowtech II
- BB Thread Type: English

Also compatible with Shimano FC-M980, FC-M985, FC-M770-10, FC-M660-10, FC-M552