Tires are obviously important for your car, but uncovered tires are aerodynamically (and otherwise) very dirty things. These spats cover the front edge of the tires that are exposed because of the stock bodywork to help clean up that air and reduce drag. They also work with the splitter to help create a high pressure zone around the bumper, helping speed up the air under your car due to the pressure differential.
These are made out of 5052 aluminum, like the splitters, for both strength and resiliency. These spats reuse the factory hardware and have a fixed position. They're intended to work together with our RGR splitters, they'll be a little long if they're used on their own.
