WHY MAGMA? - Today's harsh braking environments can create very high heat levels in your braking system which can reduce the vehicle's ability to stop. Extreme high temperatures can be reached in many braking situations such as - Stop and Go Traffic, Mountain Driving, Hauling or Towing, Emergency Stops, Spirited Driving and Long, Sustained Braking. At MAGMA Brakes, we use FIRE to fight FIRE. Our brake system components are made using advanced, state of the art techniques and treatments that ensure our brakes will stand up to the heat.MAGMA Pro-Series rotors feature...1. Computer controlled castings provide quiet, long lasting performance2. High temperature, environmentally friendly anti-rust rotor coating prolongs the life of the rotor3. OEM style vane design fffectively dissipates heat, allowing for more efficient stopping power4. Ready to install, right out of the box - no removal of oil coating required!