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. The Ultegra line offers professional level performance at a lower price point. The most cost effective way to get exceptional results out on a ride. Mounts using the Shimano HG type freehub and is designed to be used with HG-EV 11-speed chains. Genuine, brand new, boxed Shimano product - Biketart are an official UK Shimano stockist. Shimano CS-R8000 Ultegra 11-speed cassette 11-32 features Machined aluminium cassette sprockets 6 spline mounted individual sprockets 2 part and 3 part spider mounted sprockets Machined aluminium 2 part spider Hyperglide EV sprockets have been designed to reduce weight with improve teeth shaping providing accurate shifting and reduced wear Wide gear range to meet the demands of all types of rider 11-32 sprocket range Light weight and durable Mounts on to Shimano HG type freehub For use with 11-speed HG-EV chains