APR Performance 2020+ Toyota Supra (A90/A91) CF 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   car get  disrupted causing a   vacuum  of low pressure air.

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