Disc Brake Rotor Set-Front Drilled and Slotted Brake Rotor Pair Front Power Stop. Extreme Performance Drilled and Slotted; PairPower Stop's Drilled, Slotted & Zinc Plated Rotors are a popular brake performance upgrade. The rounded slots sweep away gas and debris to provide smooth, safe braking while beveled drill holes keep those brake temperatures down when you need it most. To ensure long lasting performance, silver Zinc Dichromate plating is applied to help protect against rust & corrosion. With a direct OE fit and vane count, upgrading the looks and stopping power of your vehicle has never been easier than this direct bolt-on upgrade. Features & Benefits:Precision drill holes allow for maximum rotor cooling, keeping your brakes temperatures down during extreme operating conditionsRounded slots help wipe away any gas or debris keeping a clear contact patch on the rotor surface for safe, smooth brakingSilver Zinc Dichromate plating is applied to help prevent rust & corrosion and look great behind your wheelsReversed engineered from OEM samples using G3000 grade ironEach rotor is carefully machined and mill-balanced for safe, smooth braking performance POWER STOP AR85174XPR SpecificationsBolt Circle Diameter (IN)4.30Bolt Circle Diameter (MM)108.00Bolt Hole Quantity5Height (IN)2.00Height (MM)51.00Nominal Thickness (IN)0.00Nominal Thickness (MM)11.00Outside Diameter (IN)12.40Outside Diameter (MM)315.00Rust Resistant CoatingYesSolid Or Vented Type RotorSolidSurface TypeDrilled & Slotted