Shimano 105 FC-R7000 Chainset 172.5mm 50-34T. This Shimano 105 R7000 11 speed double chainset has been designed and refined to ensure maximum levels of power-transfer from rider to road are maintained. Thanks to modern technology, Shimano has designed this crankset with the perfect gear-pitch so it performs exceptionally with standard road frames (130mm rear dropout spacing) and modern disc brake frames, which have a wider 135mm dropout spacing and wider chainline. This design pushes the advancements of road chainset performance and achieves exceptional levels of efficiency and comfort.