Hawk Performance Ceramic brake pads (HB544Z.628) are engineered to reduce brake NVH (Noise, Vibration, and Harshness), creating a quieter performance brake pad. The ceramic compound is designed for low dust output and extremely quiet operation, making it an ideal upgrade for premium European luxury vehicles. This kit includes a complete axle set for the rear brakes. Content: 4 x Rear Brake Pads (HB544Z.628). Features: Extremely quiet, ultra-low dust, improved braking power over factory pads, and gentle on rotors.