Shimano Dura-Ace R9100 Outer Chainrings

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

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