Shimano Ultegra spec road bike cassette boasting wide 11-speed gear range and smooth shifting. The Ultegra R8000 offers high level performance, easily comparable to the top race spec Dura-Ace level cassette, only very slightly heavier Engineered for use with the SHIMANO ULTEGRA R8000 groupset, the R8000 cassette is available in a wide range of road and mixed surface ratios. Genuine, brand new, boxed Shimano product - Biketart are an official UK Shimano stockist. Please note image will show 11-28T version Lightweight 11-speed HG-EV cassette with rigid alloy sprocket carrier for reduced weight and better shifting performance, even under the most demanding gear changes Suitable for road and gravel bikes Hyperglide EV sprockets have been designed to reduce weight with improve teeth shaping providing accurate shifting and reduced wear Will only fit Shimano HG style freehubs Wide gear range to meet the demands of all types of rider For use with 11-speed HG-EV or HG-X11 chains Tooth Ratios and Weights 11-25T (232g) - 11-12-13-14-15-16-17-19-21-23-25T 11-28T (251g) - 11-12-13-14-15-17-19-21-23-25-28T 11-30T (269g) - 11-12-13-14-15-17-19-21-24-27-30T 11-32T (292g) - 11-12-13-14-16-18-20-22-25-28-32T Genuine, brand new, boxed Shimano product - Biketart are an official UK Shimano stockist.