Hawk Performance HP Plus (HP+) Street & Track brake pads are designed for the high-performance enthusiast who needs a dual-purpose pad for street driving and autocross/track days. The Ferro-Carbon material offers a high friction coefficient and extreme resistance to brake fade. This kit includes a complete rear axle set (4 brake pads). Part Number: HB523N.539. Features: High initial bite, consistent torque, and superior heat resistance compared to standard street pads.