Shimano Ultegra CS-R8101 12-speed cassette

Product Description

The excellent shifting performance of the Ultegra R8100 12-speed cassette series lets you climb, sprint, and ride for long stretches without having to ease up when thinking about your next gear change. The larger sprockets in the drivetrain maximize efficiency and remain compatible with Shimano 11- and 12-speed freehubs.The Shimano HyperGlide+ cassette has revolutionized off-road shifting with smooth transitions both up and down the gear range. Now it's time for this technology to transform road cycling. Even during maximum effort on climbs or when passing a friend, riders no longer need to ease off the pedals to shift gears. Regardless of the gear selected, the Shimano Ultegra R8150 drivetrain maximizes efficiency with larger sprockets and maintains compatibility with HyperGlide freehubs. All while moving to 12 speeds. The Ultegra CS-R8101 cassette is the epitome of shifting for road cycling. Details: The combination of 12 well-spaced gears offers maximum efficiency and acceleration performance for every racing situation. Smoother and faster shifting under maximum pedaling force. HyperGlide+ technology. Compatible with the new 12-speed and 11-speed road freehub bodies. Weight: 291 g in 11-30T and 345 g in 11-34T. Aluminum sprocket arms. Steel sprocket: 12.Sizing: 11-12-13-14-15-16-17-19-21-24-27-30T 11-12-13-14-15-17-19-21-24-27-30-34T