The Shimano 105 FC-R7000 HOLLOWTECH II Crankset delivers optimum power transfer, balancing weight and efficiently without sacrificing stiffness. Shimano's range of Rider Tuned crankarm and chainring combinations expands with the introduction of a new 160mm crank arm and 50/34t ring option. The optimized lightweight crank arm design produces excellent power transfer efficiency, while the redesigned chainring tooth profiling increases clearance between the chain and leading teeth to also provide compatibility with frames that feature 135mm O.L.D. and 410mm chainstay length. 11-speed compatible.