This complete upgrade kit is engineered to improve the braking performance of the vehicle you use everyday PowerStop engineered Carbon-Fiber Ceramic Z23 compound significantly enhances braking performance versus traditional ceramic brake pads Low-dust braking validated through on-vehicle 3rd party tests in Los Angeles, showing on average 30% less dust versus OE Multi-Layer rubberized shims provide virtually noise-free braking Drilled & Slotted performance rotors provide maximum cooling Notice: This Item May Arrive In Multiple Boxes