What brake options came on the C4 corvette?
There are four brake setups that came on the C4 corvette. The first is a fixed caliper design that came on the 84-87 corvettes which I will not discuss swapping because they are not worth the effort. In 88 GM put a 12-inch brake setup with a dual piston aluminum PBR caliper on the C4’s. This setup is called the C4 NON-HD setup or non heavy duty. Then later in the production of the C4, GM came out with an optional 13-inch brake setup for the Corvette which is called the C4 HD or Heavy Duty. The final brake packet found on a limited number of Corvettes is the Grand Sport or GS setup. The GS model features a beefier caliper. The GS brake package uses the same rotor as the C4-HD brake setup.
