These high-performance disc brake rotors are CNC machined from ductile iron, and are designed to generate the highest performance you can achieve from your braking system. They provide an increased friction coefficient, higher heat capacity for better resistance to warping and excellent durability. Each rotor has directional relief grooves machined in both surfaces to vent away gases that build-up with heat under braking. These rotors are the perfect high-performance match to the extensive line of our GMA's billet brake calipers.
Note: When used on 1972 thru 1978 models a disc spacer ZPN144105 must be used.