Shimano Ultegra FC-R8100 12-Speed Double Chainset
- 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)
- 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)
Ordering Bikes to the UK
Adult bikes: ยฃ50.00 delivery
Kids' bikes: ยฃ25.00 delivery
Bikes are sent by DPD, fully tracked. Bikes are sent by DPD, fully tracked. Bikes are sent by DPD, fully tracked. Bikes are sent by DPD, fully tracked. Please allow up to two weeks for bike deliveries....
Ordering all other products to the UK
Orders under ยฃ300.00 - Standard Shipping ยฃ7.99
Orders over ยฃ300.00 - Free Shipping (excluding bikes)
View our Shipping Policy for full information on shipping options
You may return unused, unworn items in their original packaging within 28 days of delivery or collection. A 10% restocking fee applies, and refunds go back to your original payment method, usually within 14 days of us receiving the item. Custom clothing, bespoke bike builds, Trek Project One bikes and special-order items are non-refundable.
Please view our Refund Policy for full details
Found this bike at a better price somewhere else? We will try our best to match that price. Simply send us an email with a link or photo of the price and we will be in touch with our offer.
Email us at: servicecourse@saintpiran.co.uk