Hawk Performance ER-1 (Endurance Racing) brake pad set (HB540D.490) is designed specifically for endurance racing, offering a consistent coefficient of friction over a wide range of temperatures. This compound provides excellent modulation and smooth release characteristics to minimize drivetrain wear and improve lap time consistency. The set includes a full axle kit of 4 pads. Key features: High torque output, superior pad and rotor life, and peak operating temperatures up to 1600°F (871°C). Components: 1 x Brake Pad Set (4 pieces), Part Number: HB540D.490 / 7112 ER-1.