Shimano Ultegra Cassette CS-R8101-12 12-speed

SHIMANO ULTEGRA CS-R8100 12-Speed Cassette – Precision Shifting, Peak Performance

Experience the next evolution in road cycling performance with the SHIMANO ULTEGRA CS-R8100 12-speed cassette. Engineered with cutting-edge HYPERGLIDE+ technology, this cassette delivers ultra-fast, seamless shifts—both up and down the gear range—even under full load. Whether you're attacking a climb or sprinting to the line, you can shift confidently without easing off the pedals.

The refined 12-step gear progression is designed for optimal cadence and acceleration in every racing scenario, improving efficiency while delivering smoother transitions between gears. Larger cogs enhance drivetrain efficiency and ensure compatibility with both new 12-speed and existing 11-speed HYPERGLIDE FREEHUB bodies.

Key Features:

• HYPERGLIDE+ Technology: Smooth, lightning-fast shifts under maximum power.

• Refined 12-Speed Gear Progression: Maximizes cadence control and acceleration.

• Improved Efficiency: Larger cogs enhance power transfer and pedaling performance.

• FREEHUB Compatibility: Works with both new 12-speed and existing 11-speed HYPERGLIDE road hubs.

• Racing-Optimized: Built to perform when every second counts.

With the ULTEGRA CS-R8100 cassette, Shimano brings its revolutionary mountain bike shifting innovation to the road—changing the way you ride, race, and shift.