Hawk Black Race Brake Pads - Wilwood Superlite 4R/6R/SL4R/4/6 Forged - HB521M.800Working with racers at all levels, we know the challenges of getting your car to the track. Black was designed as an all purpose, low cost race pad. It's good cold effectiveness is up to the task on a wide range of tracks, from Dirt Modified to IMCA style pavement racing All purpose race compound All Hawk Performance compounds are not compatible with carbon ceramic rotors. Hawk pads are designed to work with Iron Metal rotors. Medium torque 100 900 F