Shimano Dura Ace BB-R9100 Bottom Bracket

Shimano Dura Ace BB-R9100 Bottom Bracket Cups.

Reference IBBR9100I
The new DURA-ACE is the answer to the question of many ambitious professionals and hobbyists if and how the current, already immensely high level of performance could be increased even further. Each of the DURA-ACE R9100 components is designed to work together with all other system components with maximum efficiency. This is where the core of Shimano's philosophy of components developed as a system becomes particularly clear. The result is SUPREMACY OF THE SYSTEM - the superiority of the system over the sum of the individual parts.

Dura Ace bearing cups BB-R9100
Dura Ace bearings for Shimano Dura Ace FC-R9100 Hollowtech II cranksets.
Material: steel, aluminum
Weight Addition - Manufacturer's Specification