Shimano 105 CS-R7101 12-Speed Cassette

The Shimano 105 CS-R7101 12-speed cassette is designed for road riders seeking easier gearing for climbs and long rides. It fits a Shimano Road 12-speed freehub body.

• Easy gearing for climbs: 11-34 T tooth range, from the smallest to the largest sprocket
• 12 closely spaced sprockets for gradual gear changes
• Works with Shimano electronic and mechanical rear derailleurs
• Weighs 361 g in the 11-34 version, with steel sprockets and an aluminium spider
• Requires a 12-speed chain, such as the CN-M7100

Technical specifications

• Model: Shimano 105 CS-R7101-12, 105 R7100 series
• Number of sprockets: 12
• Tooth range: 11-34 T
• Sprocket progression: 11-12-13-14-15-17-19-21-24-27-30-34 T
• Weight: 361 g (silver, 11-34)
• Material: Steel sprockets; anodised aluminium spider; nickel-plated sprockets and lockring
• Freehub body compatibility: Shimano Road, Shimano Road 12-speed
• Recommended chain: HG 12-speed (e.g. CN-M7100)
• Groupset: Compatible with electronic and mechanical groupsets
• Pack contents: 1 Shimano CS-R7101-12 cassette; 1 Shimano steel lockring

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.