Shimano slx m7000 11 speed 11 40t cassetteshimanos slx m7000 11 speed cassette takes the features and technologies seen on their higher end xt and xtr models and brings them to the masses this 11 40t cassette has the same machined tooth profiles for slick shifting and dyna sys11 rhythm step gearing dyna sys11 technology ensures that your pedalling effort is optimised by having small steps between the tooth counts on the most used gears so with this cassette on your rig youll be pedallin