Power Stop ESK6331 Rear Euro-Stop Brake Kit ECE-R90 Certified components to ensure OEM performance and safety. Disc brake rotors are cast using High Carbon metallurgy, providing the highest coefficient of friction for increased performance, optimizing thermal conductivity for resistance to thermal distortion and cracking, & improving damping coefficient to reduce squeal. Pagid certified brake pads provides the same stopping power and brake dust as OE Disc brake rotors are coated using genuine GEOMET for optimum anti-corrosion protection. Made in Europe pads and sensors from OE (original equipment) manufacturers