Dura-Ace R9100 Chainring

The Shimano R9100 series crankset achieves the ultimate in optimal power transfer. It does this through a reinforced chainring on its unique asymmetrical four-arm spider construction. 

SPECS:

• Chainring BCD: 110 Shimano Asymmetric
• Drivetrain Speeds: 11
• Material: Aluminum
• Ring Position/Type: Outer