The seamless shifting of the Ultegra R8100 12-speed cassette allows the rider to fully concentrate on climbs, sprints, or enjoyable cruising without worrying about the next shift. Sprockets with more teeth provide greater drive efficiency and ensure compatibility with Shimano 11- and 12-speed freehub bodies. Hyperglide+ cassettes set the standard for off-road shifting with seamless upshifting and downshifting across the entire gear range. It is about time that this technology is also used on road bikes. Shifting is now possible even when using maximum power on climbs or in direct duels with opponents. In all gears, the Ultegra R8150 drivetrain ensures maximum efficiency thanks to larger teeth and compatibility with existing Hyperglide freehub bodies. Despite their expansion to 12 speeds, Ultegra CS-R8100 cassettes set the standard for road bike shifting systems. Hyperglide+ is the launch pad for the generation's MTB experience and is now also available in the road series from Shimano. It enables smooth pedaling on virtually any terrain for the first time. The drive system, renewed from the ground up with a specially developed chain, enables faster shifting, efficient power transmission, and unprecedented chain stability. It precisely determines the optimal moment to change gears, ensuring smooth operation. This makes it easier for riders to adapt to abruptly changing terrain conditions. Hyperglide+ helps riders master rough trails with confidence. It dampens pedal stroke and reduces shifting times by a third compared to the current HG system.

Sprocket compatibility: Shimano. Gear ratio (teeth): 11 teeth - 30 teeth. Type: Cassette. Number of gears: 12. Purpose: Derailleur. Material type: Steel. Weight: 291 g. Gear ratio: 11-12-13-14-15-16-17-19-21-24-27-30. Nickel-plated surface.