The Shimano XTR CS-M9101 cassette is characterised by its Beam Spider construction which enables enormous weight savings and at the same time promises long durability. Not only the spider but also the three largest sprockets are made of aluminium. The highlight, however, are the 5 medium sprockets made of titanium. The incredibly light cassette also features the Hyperglide+ technology which guarantees high shifting speed, precision and smoothness when shifting up and down and contributes to an extremely quiet drivetrain.
The aluminium freewheel with 22 evenly spaced teeth keeps the cassette firmly under control for immediate response and also allows the use of a 10 teeth sprocket. In addition, the smaller and compared to the usual Hyperglide freewheel bodies more extensive gearing prevents rotor damage.