The GiroDisc 97-09 Audi S4 (B5/B6/B7) 300mm Slotted Rear Rotors are a high performance direct replacement rotor for the Audi S4. These rotors provide superior braking performance and are designed to reduce brake fade and increase stopping power. They feature a unique slotted design which helps to reduce pad glazing and improve pad bite. They also feature a higher carbon content which helps to reduce brake noise and vibration. These rotors are made from high quality materials and are designed to last for years.