APR 2020-2025 Chevrolet Corvette C8 Carbon Fiber Rear Diffuser

Diffusers work in conjunction with other aerodynamic components of a car to help produce downforce. Because a car displaces air as it moves forward, the air molecules in the rear of the vehicle are disrupted, causing a low-pressure vacuum.

To help channel the high-speed airflow coming from underneath the car, diffusers redirect the airflow to transition smoothly into the low-pressure vacuum in the rear. This encourages a smoother airflow underneath the car and allows better performance from other aerodynamic components, such as aerodynamic wings.