Hawk Performance HPS (High Performance Street) brake pads are world-renowned for increasing stopping power on your street-legal vehicle. This HB663F.557 set features a unique Ferro-Carbon formula developed for street driving using the safety and quality of Aerospace and Motorsports severe-duty friction technology. Key benefits include high friction/torque hot or cold, gentle on rotors, very low dust, and nearly noise-free operation. The kit includes: 1x Rear Brake Pad Set (4 pads total), Part Number: HB663F.557 (Thickness: 14mm).