Shimano Dura-Ace FC-R9100 11 Speed Chainring

The choice of the world's best climbers, sprinters, and time trialists, the Dura-Ace R9100 chainringdrops weight while maximising power transfer.

The new design, and its iconic look, is adapted for race specific disc brake systems.

Features

• Best balance for lighter weight (-7g) and efficiency
• Maintains high rigidity and reduces weight
• Shorter length of rear center with O.L.D.135mm
• Optimum power transfer
• Iconic design
• Adapted for race specific disc brake system
• Rider tuned gearing options

Specifications

• Chain line (mm): 43.5
• Compatible chain: HG-EV 11-speed, HG-X11
• Crank fixing bolt included: No
• Gear arms: 4
• HollowGlide: Yes
• HollowTech Technology: Yes
• B.C.D. (mm): 110
• Rear Speeds: 11