The seamless shifting of the ULTEGRA R8100 12-speed cassette allows the rider to concentrate fully on climbs, sprints or enjoyable cruising without having to worry about the next shift. Sprockets with more teeth ensure greater drivetrain efficiency and compatibility with SHIMANO 11- and 12-speed FREEHUB freehub bodies.
HYPERGLIDE+ cassettes set new standards for off-road shifting thanks to seamless upshifts and downshifts across the entire gear range. The time has come for this technology to be used on road bikes too. Shifting is now possible even when exerting maximum effort on climbs or in a direct duel with an opponent. In all gears, the ULTEGRA R8150 drivetrain ensures maximum efficiency thanks to larger teeth and ensures compatibility with existing HYPERGLIDE FREEHUB freehub bodies. Despite their expansion to 12 gears, ULTEGRA CS-R8100 cassettes set new standards for road bike shifting systems.
Compatible with 10/11-speed and Road 12-speed freehub
HYPERGLIDE+
| Field of application | Road |
| Gradation | 11-34 |
| Exact gradation | 11-12-13-14-15-17-19-21-24-27-30-34 |
| Gears | 12 |
| weight | 345 g |
| groupset | Ultegra |
| Compatible chain | HG 12-speed |
| Abbreviation | CS-R8100 |
| Part no. | ICSR810012134 |
| Model year | 2022 |
| Product type | Cassette |
