Shimano DURA-ACE R9100 Chainring Inner

The Shimano Dura-Ace FC-R9100 inner chainring is engineered for elite-level power transfer and shifting precision. Its reinforced construction works in tandem with Shimanos unique asymmetrical four-arm spider to maximize stiffness while minimizing weight. This 11-speed component is the benchmark for professional road racing performance.

Crafted from high-grade aluminum, the inner ring features optimized tooth profiles for smooth, reliable chain transitions under high torque. It uses the 110mm asymmetrical BCD specific to Shimano’s top-tier cranksets. This replacement ring ensures your drivetrain maintains the crisp, factory-standard shifting quality Dura-Ace is known for.

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