The entire tread pattern is supported by a base of high durometer rubber

3M reflective trim

Down Tube Diameter: Fits 38 - 70mm

Mount compatible only with B1 SL Speed seatpost

and their strongest casing

Shimano DEORE-XT CS-M8000 11-Speed Cassette 11-40T Gray compatio_raw The entire tread pattern isSHIMANO DEORE XT 11 Speed HYPERGLIDE MTB Cassette Sprocket The SHIMANO DEORE XT cassette shaves weight while maintaining durability thanks to an alloy sprocket carrier. This DYNA SYS11 cassette delivers precise shifting even in the most demanding mountain biking situations. Ride anywhere with smooth and precise gear changes Optimized gear combination and gear ratio Wide cassette sprocket Rhythm step gear progression Improved driving efficiency and