Shimano Dura-Ace 9100 Bottom Bracket - BSA

Shimano Dura-Ace 9100 HollowTech II Bearing Cups

Maintain optimal drivetrain performance with ultra-low drivetrain friction with the Shimano Dura-Ace 9100 HollowTech II Bearing Cups. Shimano has improved on its already advanced seal construction for smoother rotation and reduced friction.

Shimano Dura-Ace 9100 HollowTech II Bearing Cups: Available in both English (68mm) and Italian (70mm) models