With Z23 Evolution Sport carbon-fiber ceramic brake pads, properly matched drilled and slotted rotors, updated hardware, and high performance oil, everything you need is provided. Carbon fibers are used as reinforcement in the brake pads to fortify the compound. The rotors are a flawless bolt-on improvement that don't require any changes because they are cast using the best G3000 metallurgy with rigorous OE specifications. Maximum rotor cooling is made possible by precision drill holes. By doing this, your brakes remain cool even under demanding operating circumstances. In order to maintain a clear contact patch on the rotor surface for safe, smooth braking, rounded slots assist sweep away any gas or debris. All drilled and slotted rotors are coated with Silver Zinc Dichromate to help them not only look amazing behind your wheels but also function more efficiently.