Shimano Ultegra R8000 Chainring - 53 Tooth 11-Speed 110mm BCD For 53-39T Combination MFPN=00034 The proprietary D-shaped post flexes

The proprietary D-shaped post flexes in a controlled direction to reduce high-frequency vibration and road shock

Side cutouts offer increased side visibility for improved safety during night rides

Pins on the tool engage with the smallest sprocket on the cassette and hold it in place

5-75mm 350 lbs Black

Shimano Ultegra R8000 Chainring - 53 Tooth 11-Speed 110mm BCD For 53-39T Combination MFPN=00034 The proprietary D-shaped post flexesThis Shimano chainring allows you to update your Ultegra FC R8000 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 Ring Position Type Outer Tooth Count 53 Drivetrain