Shimano Ultegra CS-R8100 11-30 12 speed

The Shimano ULTEGRA 12-speed HYPERGLIDE+ road cassette is designed for smooth shifting while climbing, sprinting, and enjoying bike rides. With larger cogs, the drivetrain is more efficient and compatible with both Shimano 11- and 12-speed freehub bodies. The revolutionary off-road shifting system of HYPERGLIDE+ cassettes ensures seamless shifting across the entire range. Even under maximum effort, there's no need to ease off to shift gears. With Shimano ULTEGRA R8150 drivetrains, you achieve maximum efficiency in every gear. The ULTEGRA CS-R8100 cassette now offers 12 speeds and sets a new benchmark for road shifting. Product specifications - Model: CS-R8100-12 - Series: ULTEGRA R8100 Series - Average weight: 291 (11-30T) 345 (11-34T) - Combination: 11-12-13-14-15-16-17-19-21-24-27-30T | 11-12-13-14-15-17-19-21-24-27-30-34T - Combination name (group name): 11-30T 11-34T - Type: HYPERGLIDE + - Compatible chain: HG 12-speed - Rear speeds: 12 - Aluminum gear_Number (pcs): 0 - Aluminum spider arm_Number (pcs): 2 - Spline type_HG spline L2 (ROAD 12-speed dedicated): Yes - Steel gear_Number (pcs): 12 - Titanium gear_Number (pcs): 0