SHIMANO DEORE CS-M5100 11-SPEED CASSETTEWIDE RANGEThe cassette you use on your bike has a significant impact on your climbing ability and performance. With a larger low gear, you'll be able to climb steeper hills with ease. The Shimano Deore CS-M5100 11-Speed Cassette is designed for trail mountain biking. It is compatible with Shimano's Hyper Glide freehub bodies and is available in both 11-51T and 11-42T options. Features Compatible with standard HG freehub bodies11-51T cassette designed for 1x11 drivetrains only11-42T cassette works with both 1x11 and 2x11 drivetrains Specifications Cassette Body Type Shimano HG freehubs Cassette Cogs N/ADrivetrain Speeds11Cassette Material Steel Weight N/A | Shimano | Deore Cs-M5100 11 Speed Cassette 11-51 Tooth