With the ULTEGRA R8100 12-speed cassette you can shift smoothly on the climb, in the sprint and on pleasure rides, without worrying about your next shift step. Larger drive wheels make the drivetrain more efficient and suitable for both Shimano 11- and 12-speed freehubs.
HYPERGLIDE+ cassettes offer a revolutionary off-road shifting system with seamless shifting to both extremes of the hot range. Now it's time for technology to change road cycling too. Even at maximum effort on a climb or in a competition with a friend, you don't have to slow down to change gears. Shimano ULTEGRA R8150 drivetrains offer maximum efficiency in every gear thanks to the larger sprockets and are still compatible with existing HYPERGLIDE freehubs. In addition, ULTEGRA CS-R8100 cassettes now have 12 gears and are the new benchmark for shifting on the road.
FEATURES
Refined 12-step gear combination delivers optimum efficiency and acceleration performance for any racing situation
Faster, smoother shifting under maximum pedal force
Suitable for the new 12-speed and 11-speed racing freewheel hub
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