Wilwood ProMatrix replacement rotor kits are replacements with a choice. These upgrade kits offer improved brake performance for racers and enthusiasts using OE factory brake calipers. You have a choice of 2-piece directional vane GT rotors that are ideal for high-heat track use, or their SRP drilled and slotted rotors that feature a black e-coat finish for style and performance on the street. It doesn’t matter if you are a hardcore racer, weekend warrior, or just an enthusiast who wants the most out of your car–Wilwood ProMatrix replacement rotor kits let you take full advantage of your factory calipers.