Shimano Ultegra CS-R8101 12-Speed Cassette 11-34

The Shimano Ultegra CS-R8101 is a 12-speed cassette with a 11-34-tooth range, designed for road riders. It pairs with the Ultegra R8100 groupset.

• Ratios from 11 to 34 teeth: easy gearing on climbs, speed on flat roads
• 12 sprockets, from 11 to 34, to help you find the right ratio
• HYPERGLIDE+ technology for smooth shifting even when pushing hard on the pedals
• Weighs 345 g and has nickel-plated steel sprockets
• Choose wheels with a HG Spline L2 body and a HG 12-speed chain

Technical specifications

• Version: 11-34T (12 sprockets: 11, 12, 13, 14, 15, 17, 19, 21, 24, 27, 30, 34)
• Speed: 12
• Weight: 345 g
• Type: HYPERGLIDE+
• Chain: 12-speed HG
• Compatibility: HG Spline L2 (road 12-speed)
• Pairing: Ultegra R8100 groupset
• Material: Steel, nickel-plated
• 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.