Fully floating rotor design Stainless steel rotor blades that are heat-treated and tempered back to the optimal hardness for maximum performance and durability Lightweight rotor profile design Patented SD-System square drive button technology rotor and carrier are riveted together so there is no need to ever rebuild the carrier buttons Available in custom color rotor hub options to match the look of your bike Front rotors are non-directional: fit right or left side Sold each.