The size difference between the stock Z51 and Chevy Performance rotors is readily apparent when they are stacked back to back.
Howard installs the Chevy Performance rotor.
Usually installing big brakes means that the heatshields on the stock rotors have to either be cut, removed or modified. Fortunately, the C7 heatshields are designed from the factory for bigger rotors, and the new brakes simply bolt in place in minutes.
The big Chevy Performance rear brakes are looking mighty impressive!
The stock Z51 brakes were no slouch, but having a larger rotor is necessary for helping maintain system balance. The bigger front brakes require bigger rear brakes to keep all of the car’s electronics in calibration and happy.
Having a two piece rear rotor with all of its advantages on a rear brake system with an integrated parking brake drum is pretty unusual. This is stuff usually reserved for exotics and high-end aftermarket big brake kits. The Chevy Performance kit is just that!
As an afterthought, it might have been nice to powdercoat that hat black to match the front rotors, but at least the aluminum anti-corrosion coating isn’t going to rust.