The PowerStop Z23 Evolution Sport Brake Upgrade kit has everything you need; perfectly matched drilled & slotted rotors Z23 Evolution Sport carbon-fiber ceramic brake pads upgraded hardware and high-performance brake lubricant. Our Z23 brake pads are reinforced with carbon fibers to strengthen the compound. Drilled and slotted rotors are cast using the finest G3000 metallurgy with strict OE tolerances - making them a perfect bolt-on upgrade without the need to make any modifications. Precision drill holes allow for maximum rotor cooling. This keeps the temperature of your brakes down during extreme operating conditions. Rounded slots help wipe away any gas or debris - keeping a clear contact patch on the rotor surface for safe smooth braking. Silver zinc dichromate plating is applied to all drilled & slotted rotors they not only look great behind your wheels but to help protect against wear and preserve the clean appearance.