Shimano deore xt disc hub rear m756aa reliable long lasting disc compatible rear hub from a classic atb groupset featuresstandard six bolt fitting for disc brake rotors the perfect hub for shimano deore xt hydraulic disc brake systemdouble contact sealing shuts out mud and water from bearings to extend their service life and maintain smooth operation in all environmentslow friction borozon treatment bearing races for a precision rolling actionlight alloy quick release includedhub shell anodis