The FC-R8000 HOLLOWTECH II Crankset receives numerous technologies from Dura-Ace R9100 along with shaping which further enhances ULTEGRA’S 4-arm design. Shimano’s Rider Tuned chainring combinations offer multiple gearing configurations via a singular BCD platform for excellent versatility. With redesigned chainring tooth profiling first introduced for DURA-ACE R9100, the ULTEGRA FC-R8000 Crankset is optimized for the latest disc brake frame designs without the need to increase q-factor.
Optimized lightweight crank arm design produces excellent power transfer efficiency
Redesigned chainring tooth profiling increases clearance between chain and leading teeth to provide compatibility with frames featuring 135mm O.L.D. and 410mm chainstay length