Hawk Performance has dominated Motorsports race tracks for more than 15 years, offering highly-engineered friction products for nearly every type of racing! *Blue 9012 ('E' Compound Code)* Medium/High torque and temperature compound with excellent brake modulation. #1 selling brake pad material for SCCA. * Medium/High Torque and Temperature Compound * Excellent Brake Modulation * #1 Selling Brake Pad Material for SCCA. *Blue MT 4 ('L' Compound Code)* Medium/High torque and temperature compound with Medium/High initial bite. Brake pads designed for circle track cars under 2800 lbs without high deceleration rates. * Medium/High Torque and Temperature Compound * Medium/High Initial Bite * Brake Pads Designed for Circle Track Cars Under 2800lbs Without High Deceleration Rates *Black ('M' Compound Code)* Medium torque and temperature compound designed to be a good, all-purpose low- cost racing brake pad. Can be used as a Dirt Circle Track and Stock Car application. * Medium Torque and Temperature Compound * Exceptional Stopping Performance * Designed to be a Good, All-Purpose, Low-Cost Racing Brake Pad *DR97 ('J' Compound Code)* Excellent static and dynamic coefficient of friction. Smooth linear torque. Low pad and rotor wear. Brake pads specifically designed for use in drag racing applications. *Note:* Hawk Performance burnishes its HP Plus brake pads as a final step in the factory, but all brake pads have to be bedded-in with the rotors (new or used) that they will be used against. Properly bedding-in new brake pads results in a transfer film being generated at the pad and rotor interface to maximize brake performance.