9 You may have noticed the black E-coat on the rotors. Wilwood tells us that the E-coat adheres to the rotor better than the traditional zinc coating, offering long-lasting good looks. After lubricating the caliper mounting studs with a lightweight oil, the caliper simply slides onto the bracket's studs. Be sure to note the directional arrows on the calipers and ensure that the bleeder screws are pointed up during installation. Wilwood's Superlite 6R calipers are a forged-billet, radial mount design that offers two planes of adjustment to properly align the caliper over each rotor.