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Shimano FC-R8100 Ultegra 12-speed double chainset


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High performance and epic value from Shimano Ultegra for the road enthusiast

  • The HollowTech II 12-speed Ultegra chainset offers an ideal balance of light weight and stiffness, making it the perfect choice for both enthusiast and competitive riders
  • HollowGlide hollow outer chainring gives vast improvements in rigidity by virtually removing outer chainring flex and hugely improves shift performance, even under high load
  • The chainring teeth have been developed to work in conjunction with 12-speed HG chains for increased contact to provide greater efficiency and improved power transfer
  • Industry leading HollowTech II cold forged 4 arm hollow cranks have been evolved for maximum rigidity while reducing weight
  • Wide gear pitch spacing increases clearance between chain and leading teeth to provide compatibility to frames with O.L.D. 135 / 142 mm
  • A wide range of chainring options and crank arm lengths are available to meet the needs of all riders and racing disciplines
  • HollowTech II integrated bottom bracket uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency
  • HollowTech II integrated bottom bracket seal design has minimal bearing interface ensuring smooth rolling and increased durability(sold separately)
Crank Length

160mm, 165mm, 170mm, 172.5mm, 175mm

Chainring Size

46/36, 50/34, 52/36


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Ultegra 12 speed chainsetShimano FC-R8100 Ultegra 12-speed double chainset