Shimano Ultegra R8101 12-Speed Cassette 11-30

The Shimano Ultegra CS-R8101 cassette is designed for road riders with a 12-speed drivetrain. The 11-30 version covers climbs and flat roads with closely spaced ratios.

• Closely spaced ratios: 12 sprockets from 11 to 30 teeth help you find the right gear
• Lightweight: 291 g in the 11-30 version, less weight to pedal uphill
• Robust: nickel-plated steel sprockets for long service life
• Fits 12-speed HG Spline L2 freehub bodies
• Pair with a Shimano 12-speed HG+ chain. The lockring is included in the package

Technical specifications

• Version: 11-30T (12 sprockets: 11, 12, 13, 14, 15, 16, 17, 19, 21, 24, 27, 30)
• Speed: 12
• Weight: 291 g (11-30T version)
• Material: Steel, nickel-plated
• Standard: Shimano HG
• Compatibility: 12 and 11-speed freehub bodies; HG Spline L2 (Road 12-speed) and HG L (Road 11-speed and others)
• Recommended chain: Shimano 12-speed HG+
• Package contents: One 12-speed cassette and one lockring
• Intended use: Road bikes

Founded in 1921 in Sakai, Japan, by Shozaburo Shimano, Shimano is still based in the same city today. For cyclists, it makes drivetrains, brakes, wheels, pedals and cycling shoes. Its history in bicycle components began with the production of freewheels in 1922.