Proven Quality Municipal Series offer dynamic performance for the demanding requirements of law enforcement, first response, and special service vehicles. Pursuit Rotors utilize GG20HC High Carbon Metallurgy for improved heat dissipation and distortion resistance, resulting in better-stopping power with reduced noise and vibration. They offer excellent braking performance in the most extreme stopping situations. Special Service Rotors are engineered to SAE J431 metallurgical standards ensuring dependable performance, long life, and quiet braking. All Proven Quality Municipal Series rotors are Electrophoretic Coated including the inner vanes. Unlike a sprayed on paint, the rotor is fully immersed into a tank and coated by the process of Electrophoretic deposition. During the process, resin particles are suspended within a liquid medium and have a charge placed upon them. Under a charged current, the coating particles migrate to the rotor and are deposited onto all exposed surfaces, resulting in a highly corrosive-resistant and durable coating. Premium Core Technology allows for tighter tolerances and cleaner castings. With this process, non-machined areas of the rotors are more detailed. Machine Balanced for smooth braking. Multiple Vane configurations for heat dissipation. Non-Directional Swirl Finish promotes brake pad bedding and eliminates the need for machining prior to installation.