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.

Since 1999, APR Performance has been producing and manufacturing high quality performance products for the aftermarket automobile industry. Every product is track tested to assure they are able to withstand the extreme environment of the track.

With capabilities to produce products in both Carbon Fiber and Aluminum manufacturing processes, APR’s products are durable and lightweight. These composite technologies allow APR to maintain its high levels of quality and durability.

APR Product Warranty
All merchandise manufactured by APR Performance is fully warranted against defects in workmanship and materials for one year from the time of purchase. If any product is suspected of being defective, return the product to APR Performance. APR will not accept any C.O.D. returns unless specified by an APR representative. Any item determined to be defective will be replaced. On any warranty claim, we will be responsible for APR parts only. APR is not responsible for any labor or inconvenience charges.