NEW Shimano Ultegra FC-R8000 Crankset 172.5mm, 53/39t, groupset-front-1x Chain: KMC Z9 OR KMC

Chain: KMC Z9 OR KMC X8

68mm BB Shell

The EX1 drive train was designed specifically for the demands of electric-assist mountain bikes: a wide gear range with bigger jumps between gears and sturdy components to handle higher torque loads

50cm 5' - 5'5"

High Energy Magnet Could affect the function of electronic instruments like pacemakers or avalanche beacons Swallowing hazard

NEW Shimano Ultegra FC-R8000 Crankset 172.5mm, 53/39t, groupset-front-1x Chain: KMC Z9 OR KMCThe Ultegra Hollow Tech II Crankset features an optimized lightweight design that doesn't sacrifice stiffness. Wider gear pitch increases clearance between chain and leading teeth Defined Color: Black Rings: 53 39 Spindle Interface Type: Shimano Hollowtech II Chainring BCD: 110 Shimano Asymmetric Color: Black Chainline Hub Compatibility: 130 Hubs Chainline Hub Compatibility: 135 142 Road Disc Hubs > 415 mm Chainstay keyword search: IFCR9100DX39