The caliper also has stainless steel abutments to protect the aluminum caliper body from being galled by the steel brake pad backing plate.
The rear rotor is somewhat unusual, as it is a two-piece part, but the rotor hat is made out of steel rather than aluminum.
Steel is used because the car uses a drum brake for a parking brake, and the hat is actually the brake drum for the parking brake itself. If the hat was made of aluminum, the parking brake shoes might wear into the soft aluminum quickly.
The hat is given an aluminum plasma spray to keep it from rusting.
You can see the brake drum integrated into the hat here.
The anti-rust coating is also applied to the friction ring of the rotor. Like the front rotors, the rear rotors also have the curved slots cut into the friction surface of the rotor.
Also like the front rotors, the rear rotors have the friction ring of the rotors fully floated from the hat. This is to prevent high-temperature distortion of the friction ring caused by being attached to the heat sink hat on one side and differential cooling. The same hardware is used to float the friction ring as on the front rotors.
Now it was time to install our brakes! First, Howard removed our front wheels.
As you can see, the stock Z51 brakes are no slouches and would be considered a great upgrade for many lesser cars. This would not do for us, as the C7 is the American made exotic!