Every high-quality, Galfer-patented rotor is made from a proprietary mix of virgin high carbon 420 stainless steel, laser cut (never stamped), double disc-parallel ground to assure perfect parallel flatness and heat treated to each specific application. The non-floating Tsunami Superlight version has special grooves to provide an active cooling system by allowing air to pass over every point of brake pad surface. Depending on application, designed for street, track and off road, this rotor is for the rider that wants more than what the stock brake system can provide. Non-floating standard or Tsunami design. Seamlessly replaces stock rotor. Longer-lasting, extremely predictable and consistent with a drastic increase in lever feel, modulation and brake torque. Full instructions provided along with any technical help needed! Precision made in the Galfer factory in Spain. KBA and TUV approved.