Shimano XTR Di2 11 Speed Cassette CSM9000

Rhythm is the essence of smooth power transfer and proper gear step is the key to maintaining rhythm over varied terrain. The Shimano XTR CS-M9000 11-speed 11-40T cassette is not only the widest range cassette Shimano has ever produced, but also it’s most balanced. Thanks to its Rhythm Step progression, it maintains calculated, shock-free gear steps from one gear to the next; saving you energy and helping you maintain your rhythm on the trail.