Shimano Ultegra R8000 Chainring - 53 Tooth 11-Speed 110mm BCD For 53-39T Combination MFPN=11.6818.016.040 Bolt in collar is tightened/loosened

Bolt in collar is tightened/loosened via 3mm hex wrench

Fits Brand SRAM Drivetrain Speeds 10 Drivetrain Speeds 11

Chainline is 45mm on standard spindle cranks and 47

} Measures head tube/seat tube/rear dropout alignment

For double wall rims with single eyelet or non-eyeleted nipple holes

Shimano Ultegra R8000 Chainring - 53 Tooth 11-Speed 110mm BCD For 53-39T Combination MFPN=11.6818.016.040 Bolt in collar is tightened/loosenedThis 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