The Shimano Deore SM-RT54 disc brake rotors provide exceptional stopping power in all riding conditions. Shimano's Center Lock mounting system makes installing and removing rotors quick and easy thanks to the spine mount and lock ring design.Includes standard type rotor lockringRequires external-type rotor lockring when installing onto 15/20mm axle hubFor use with resin pads onlyCenter Lock lockring design offers fast and easy installationItem SpecificationsHub/Disc CompatibilityCenter-LockPad CompatibilityResin Pads OnlyRotor Size (mm)160Rotor TypeTwo Piece