Shimano Cassette Ultegra CS-R8100-12-Speed

HYPERGLIDE+ cassettes offer a revolutionary off-road shifting system with seamless gear changes across the entire range. Now it's time for... HYPERGLIDE+ cassettes offer a revolutionary off-road shifting system with seamless gear changes across the entire range. Now it's time for this technology to transform road cycling as well. Even under maximum effort on a climb or in a sprint with a friend, you don't need to ease off to shift. Shimano ULTEGRA R8150 drivetrains deliver maximum efficiency in every gear thanks to larger sprockets and remain compatible with existing HYPERGLIDE freehub bodies. Additionally, ULTEGRA CS-R8100 cassettes now feature 12 speeds and set the new standard for road shifting. Product description Refined 12-speed sprocket combination delivers optimal efficiency and acceleration performance for every race scenario Faster, smoother shifting under maximum pedal force Compatible with new 12-speed and 11-speed road freehub bodies