Shimano Ultegra CS-R8100 12-Speed Cassette

Larger driving cogs maximize drivetrain efficiency and create compatibility with both Shimano 11 and 12-speed freehub bodies. Shimano HYPERGLIDE+ technology is integrated to provide seamless shifts both up and down the gear range

• Optimized For Di2 Shifting Systems
• Tooth profile designed to work with electronic Shimano drivetrains
• Refined 12 step gear combination provides peak efficiency and accelerating performance for every racing situation
• Faster, smoother shifts under maximum pedaling force
• Compatible with new 12-speed (HG-Spline-L2) and road 11-speed (HG-11) freehub bodies
• Cassette Body Type: Shimano HG-Spline-L2
• Drivetrain Speeds: 12
• Range: choose; 11-30t, or 11-34t
• Weight: 291g. (11-30t); 345g. (11-34t)
• Color: Silver