Description
The Shimano Ultegra FC-R8100 12-Speed Double Chainset uses HollowTech II 12-speed technology to deliver an ideal balance of lightweight and stiffness, making it the perfect choice for both enthusiasts and competitive riders.Shimano Ultegra FC-R8100 12-Speed Double Chainset FeaturesHollowGlide hollow outer chainring gives vast improvements in rigidity by virtually removing outer chainring flex and hugely improves shift performance, even under high loadThe chainring teeth have been developed to work in conjunction with 12-speed HG chains for increased contact to provide greater efficiency and improved power transferIndustry-leading HollowTech II cold forged 4 arm hollow cranks have been evolved for maximum rigidity while reducing weightWide gear pitch spacing increases clearance between chain and leading teeth to provide compatibility to frames with O.L.D. 135 / 142 mmA wide range of chainring options and crank arm lengths are available to meet the needs of all riders and racing disciplinesHollowTech II integrated bottom bracket uses a wider bearing placement and larger axle diameter for increased stiffness and efficiencyHollowTech II integrated bottom bracket seal design has a minimal bearing interface ensuring smooth rolling and increased durability (sold separately)
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