RAC brake discs consist of extremely warp-resistant, hardened and tempered steel. A special surface grinding process prevents any vibration occurring and thus improves the alignment of the brake pads (tolerance less than 1/100 mm). The even build-up and dissipation of heat allows uniform pad pressure. The electroplated surface protects against corrosion and the specific mix of materials increases the durability by 30%. The laser technology used in manufacture makes possible a lightweight design with finely engineered contours.