CS-R8100-12 NEW
The ultra-smooth experience of the ULTEGRA R8100 12-speed range lets you climb hills, sprint, and ride long distances without having to worry about the next gear change. Larger sprockets maximize drivetrain efficiency and create compatibility with SHIMANO 11- and 12-speed hub bodies.

The HYPERGLIDE+ cassette revolutionized off-road gear shifting with seamless shifting and downshifting. The time has come for technological advancements in road cycling. Even when pushing hard on climbs or racing a friend, you no longer need to reduce pedal pressure to shift gears. In any gear, the ULTEGRA R8150 drivetrain maximizes efficiency thanks to larger sprockets while maintaining compatibility with existing HYPERGLIDE rear hub bodies. All this while moving to 12 gears and without increasing weight, the ULTEGRA CS-R8100 cassettes are the new frontier for road bikes.

The refined 12-step progressivity maximizes efficiency and acceleration performance for all racing situations.
Faster and smoother gear changes even with maximum pedaling force
Compatible with the new 12v rear and 11v road hub bodies