The Hyperglide + cassette revolutionized shifting in off-road conditions with smooth transitions both up and down the gear range. Now it's time for this technology to transform road cycling. Even during maximum efforts uphill or while overtaking a friend, riders no longer need to ease their pedal pressure to change gears. No matter which gear they choose, the Shimano Ultegra R8150 maximizes efficiency with larger sprockets while maintaining compatibility with Hyperglide freehub bodies. And all of this is achieved with 12 gears. The Ultegra CS-R8100 cassette is the epitome of shifting for road cycling.

• The combination of 12 well-spaced gears offers maximum efficiency and acceleration performance for any racing situation.
• Smoother and faster gear changes under maximum pedal force.
• Compatible with the new 12-speed freehub body and 11-speed road bikes.

Combination: 11-12-13-14-15-16-17-19-21-24-27-30T
Pre-assembled: N/A
Packaging: Individually packaged.