Shimano Dura-Ace 9000 53t 110mm 11-Speed Chainring for 39/53t CheckoutSpec= 160mm Hydraulic Disc Brake Caliper Three-chamber air spring system for

Three-chamber air spring system for a wide range of adjustability

Forged aluminum cooling finned backing plate

DISC brake wedge

The other side accepts standard 1/4" hex drive bits (not included) which are held in place using a strong retaining magnet

Another special seat from the mind of Aaron Ross

Shimano Dura-Ace 9000 53t 110mm 11-Speed Chainring for 39/53t CheckoutSpec= 160mm Hydraulic Disc Brake Caliper Three-chamber air spring system forThis Shimano chainring allows you to update your Dura Ace FC 9000 11 speed crankset with a chainring configuration to best fit your riding style. Integrates Shimano Hollowglide Technology: the high rigidity hollow structure cuts down on weight yet maintains strength to provide better power transfer and quicker more precise front shifting Features a weight saving 4 bolt design with a BCD of 110 mm Ideal for road cycling Ring Position Type Outer Tooth