Shimano’s Dura-Ace range needs no introduction. Every component in this groupset has been re-engineered for optimal weight savings and maximum energy output. The Dura Ace 9100 features Shimano’s iconic 4-arm hollow spider creating a perfect balance of low weight and stiffness.
- Overall weight has decreased by 7g and compliments an increase in stiffness
- Iconic 4-arm construction maintains high rigidity and reduces weight
- New chainring tooth profile is adapted for race bike specific disc brake systems