E Thirteen TRS+ CassetteThis superb cassette is specifically designed for MTB use as it dominates every enduro and freeride run. Offering unbeatable value combined with crisp shifting performance on both SRAM and Shimano drivetrains, this model uses a unique two-piece assembly and an exclusive 9T sprocket. Thanks to its wide ratio, you’ll benefit from being able to tackle steep climbs effortlessly and blast hard on the descents. The largest cogs are precision machined from aluminium and attach to a SRAM XD driver body. The remaining eight steel cogs lock into place with a chain whip. Features: Material: EXA+ Alloy and Heat-Treated CrMo Steel Use: Enduro; Freeride Speed: 12 speed Drivetrain Compatibility: SRAM and Shimano shifters, chains and derailleurs Freehub Compatibility: SRAM XD Driver Range: 511% Weight: 339g (approx)Buy E Thirteen Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.