Est. 1982

Shimano XTR SM-BB93 68/73mm Bottom Bracket / BSA


Shimano XTR M93 Bottom Bracket set is strong and smooth. This English-threaded BB is incredibly light, sealed for mucky conditions, and spins freely for top performance. 

Key Features

  • Set includes left and right hand cups, spacers, inner cover, and inner O-rings
  • 68mm or 73mm compatible
  • Durable black anodised finish
  • Maintenance Free
  • Thread Type: English
  • Compatible with all Shimano Hollowtech II MTB crank sets