The Hollowtech ii 12-speed Shimano FC-R8100 Ultegra 12-speed chainset offers an ideal balance of light weight and stiffness, making it the perfect choice for both enthusiast and competitive riders.
Features:
- 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)
