Shimano Ultegra R8100 12-speed Chainset

The Shimano Ultegra R8100 12-speed 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)

All UK Mainland Bike Deliveries Over £999 - Free Bike orders are sent via TNT/FedEx with estimated delivery within 1 working day after quoted dispatch time (For Scottish Highlands, Northern Ireland, Isle of Man and the Channel Islands deliveries please allow an additional 1-4 working days).Bike orders under £999 will incur a £20 delivery fee.

Free Delivery On Orders Over £50.00 - When you spend more than £50.00 at 99 Bikes deliveries to a UK mainland address will be free (excludes bikes & large items).Certain regions and territories of the UK will incur additional charges, details of which can be found on our delivery page.

Click & Collect Orders -Please be aware Click & Collect orders may take some time to fulfil. We advise not to travel to your chosen store until you have been notified that your order is ready for collection.

At 99 Bikes our priority is to ensure that you are highly satisfied with your purchase. In the unlikely event that you aren't, we offer a 30 day online return policy* in which you can receive a full refund. Any item including bikes (with the exception of food) can be returned to us for any reason provided it is received by us in an unused and resalable condition in or with its original packaging which must be undamaged.

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