Power Stop Evolution Coated rotors are a direct bolt-on replacement for factory equipment. These disc brake rotors are fully coated, including inside the vanes, using Genuine GEOMET rust preventative coating. Evolution Coated rotors are manufactured with our Tru-Cast™ technology, resulting in a precision cast and precision machined product. Rotors are OE weight and retain the OEM vane configuration for trouble-free operation. The entire brake rotor is treated with a thin layer of Genuine GEOMET 360 coating which protects against rust and corrosion without influencing the vehicle's braking performance. The aluminum silver color of GEOMET 360 integrates perfectly with the style and design of today's open alloy wheels. Want maximum protection against rust? Chose Power Stop Evolution coated rotors!