Shimano XT M771 10-Speed Cassette

The Shimano XT CS-M771 10-Speed Cassette, engineered with Dyna-Sys technology, is designed to create smoother shifting, better ratios, and smoother pedaling. What does that mean for you? Couple this cassette with a Shimano Ten-Speed Rear Derailleur, and you'll be dropping all your friends on the uphills. Compatible with 8/9/10/11 speed freehub bodies and takes a standard MTB chain.