Shimano Cassette Ultegra CS-R8100-12-Speed

Hyperglide+ cassettes offer a revolutionary off-road switching system with seamless switching to both extremes of hot range. Now it's time... Hyperglide+ cassettes offer a revolutionary off-road switching system with seamless switching to both extremes of hot range. Now it's time for the technology to change cycling on the road. Even with maximum effort on a climb or in a competition with a friend you don't have to take back to switch. Shimano Ultegra R8150 drives offer maximum efficiency in every gear thanks to the larger gears and are still suitable for existing hyperglide free -running hubs. In addition, Ultegra CS-R8100 now have 12 gears and are the new benchmark for switching on the road. Product description Refined 12-step gear combination provides optimum efficiency and acceleration performance for every racing situation Faster, smoother switching under maximum pedal power Suitable for the new 12-speed and 11-speed racefreewheelnaaf