Doc’s Diesel RAM 6.7L/5.9L Cummins SRW High-Carbon Front and Rear Brake Rotors Kit 2009-2025RAM 6.7L/5.9L Cummins SRW High-Carbon Front and Rear Brake Rotors Kit 2009-2025. Doc’s Diesel RAM 5.9L Cummins High-Carbon Front Brake Rotor Set 2009-2025.