Shimano Deore CS-M5100 11Sp HyperGlide Cassette 11-42T SilverThe Shimano Deore CS-M5100 11Sp HyperGlide Cassette Sprocket is perfect for front single and double MTB drivetrains, Rider Tuned gear steps for maximum cadence control across the varied terrain of mountain biking. Hyperglide sprockets incorporate specially positioned shift ramps and tooth profiles for improved chain control during shifting. Fast and responsive indexed shifting is the result. Ranges 11/42t 11-13-15-17-19-21-24-28-32-37-42T, 11/51t 11-13-15-18-21-24-28-33-39-45-51T. Available in 11-42T, and 11-51T.192790618739