Description
FEATURES of the Shimano Dura-Ace FC-R9100 Crankset
- Crank arm length: 165, 167.5, 170, 172.5, 175, 177.5, 180mm
- Rider tuned gearing options
- 4-Arm construction crankset
- New designed crank arm
- Iconic design
- Redesign the gear teeth profile to fit wider gear pitch
- Hollowglide
- Best balance for lighter weight (-7g) and efficiency
- Shorter length of rear center with O.L.D.135mm
- Gear combination: 50-34T, 52-36T, 53-39T, 54-42T, 55-42T
- Optimum power transfer
- Adapted for race specific disc brake system
- Maintains high rigidity and reduces weight
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