StopTech Cryo Sport brake rotors are cryogenically treated to align the molecular structure of the disc for enhanced durability and longer life. Deep cryogenic treatment is a one-time process that permanently improves the performance and wear characteristics of metal components. These are direct replacement discs for your factory brake system and stock calipers. StopTech Cryo Sport brake rotors offer improved cooling and other advantages the competition doesn't offer. Cross-drilling and slots help in wiping away the debris formed between the pad and the disc, add more bite and help the rear brakes to match the aesthetics of a front big brake kit. The rotor finish helps prevent glazing of the pads and improves wet and dry braking performance. Additionally, StopTech Sport rotors feature a durable black e-coating on the non-swept areas of the rotor to prevent corrosion.