Avid XX Disc Brake Caliper and Levers. The all-new two-piece forged magnesium caliper allows for greater stiffness and performance in a lighter-weight package. The oversized pistons give you more stopping power with less lever pull, for easy one-finger braking. Magnesium lever body and caliperTitanium Torx T25 hardwareStainless steel rotor on an aluminum carrierIncludes standard and Matchmaker X lever clampsItem Specifications- CaliperBrake Usage F/RRearHub/Brake Compatibility6-Bolt DiscBrake TypeDiscBrake Lever ActuationHydraulicRotor Size185mmCaliper Type74mm Post MountDisc Mount Type74mm Post Mount,51mm I.S. RearHydraulic Hose Length1450Item Specifications- LeverIntended UseMountainBrake Lever ActuationHydraulicBrake Lever UseRightCableHydro