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

With eight LEDs this light has a maximum output of 1200 lumens and an impressive 60-hour max runtime providing the best beam pattern for optimal visibility in even the most challenging conditions

14 speed internal rear hub drivetrain system shifts under load

model NanoAir material TPU tire size 29" tire width 2

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