High performance rear Freehub for rim or Disc brakes: XT is renowned for offering the best performance to value ratio Designed for use with Centre-Lock Disc rotors for secure hassle free setup Super quick engaging Freehub body with pawl engagement every 10 degree giving near instant power transfer Double contact sealing with internal grease sleeve helps to keeps out water & dirt from bearings ensuring constant smoothness & longevity whilst keeping the grease in place Borozon treated cone bearing races provide precision low-friction rolling Cup & cone bearings for durability, strength & smooth rotation Lightweight design features oversized 14 mm alloy axle for rigidity Can be used with 8, 9, 10, 11-speed cassette sprockets Quick release lever is lightweight & easy to adjust