Dura Ace FC-R9100

• Optimum power transfer
  
• Maintains high rigidity and reduces weight (-7g)
  
• Best balance for light weight and efficiency
  
• 4-arm construction crankset
  
• New design crank arm, adapted for race specific disc brake system
  
• Redesigned gear teeth profile to fit wider chain angles
  
• Compatible with shorter chainstays (410mm) on frames with 135mm or 142mm spacing

Attributes