Evolution drilled, slotted, & zinc plated rotors are the most popular performance upgrade rotors that PowerStop offers. The rounded slots are designed to sweep away gas and debris to provide smooth, safe braking. The beveled drill holes keep the brake temperatures down when you need it most. To ensure the long-lasting performance of the rotors, silver zinc dichromate plating is applied to the rotors to help extend their life and appearance. With a direct OE fit and vane count, upgrading the looks and the stopping power of your vehicle has never been easier to do than with this direct bolt-on upgrade.