Hawk Performance PC (Performance Ceramic) brake pads are engineered to reduce brake NVH (Noise, Vibration, and Harshness), creating a quieter performing brake pad for luxury vehicles. The ceramic compound is designed to deliver a linear friction profile that allows your ABS system to operate most effectively with reduced brake dust output. This kit includes a full axle set of rear brake pads (4 pieces). Part Number: HB823Z.652. Component List: 4 x Rear Brake Pads, 1 x Hardware Kit (if applicable by manufacturer specification).