The Sram XG-1150 cassette is a 11-speed cassette that is kept together by 123 pins. Therefore this cassette is not only lightweight but also very durable. The cassette has a very wide range, from 10 up to 42 teeth, so not one trail is going to be a problem. Through the open X-DOME™ design, mud and other dirt can easily be removed. This is good for the shifting properties and its durability.