The Shimano Dura-Ace R9200 chainring has the optimum balance of stiffness, strength, weight. Hollowglide construction reduces weight but maintains strength for better power transfer and faster, more precise front shifting.
The Shimano Dura-Ace R9200 chainring has the optimum balance of stiffness, strength, weight. Hollowglide construction reduces weight but maintains strength for better power transfer and faster, more precise front shifting.