Cusco Diffusers

In automotive terms, a diffuser is a shaped section of the car’s underbody, which improves the vehicle’s aerodynamic properties. This happens by enhancing the transition between the high-velocity airflow underneath the car and the freestream airflow of the ambient atmosphere. In simpler terms, the purpose of a rear diffuser is to reduce air turbulence as your car drives at high speeds.

By decreasing drag, rear diffusers make your car more stable at high speeds and reduce the amount of wind resistance it must overcome. Less wind resistance means that your vehicle will be able to utilize its existing horsepower and torque more efficiently. A rear diffuser also adds style to your car and helps it stand out from the crowd. If you have a rear wing on your car, it also affects the diffuser. When the rear wing is mounted low and close to the diffuser, the low pressure under the wing helps suck air through the diffuser.

As the front of a vehicle slows down the air without a diffuser, this is the ideal place to install an inlet. A splitter is commonly used and serves to increase the amount of downforce (lift inverted) at the front of the car. The airstream is brought to stagnation above the splitter by an air dam, which results in an area of high pressure. Below the splitter, the air is redirected away from the stagnation zone and accelerated, causing the pressure to drop. The decrease in pressure in combination with the high pressure over the splitter area creates downforce. Consequently, the larger the area of the splitter, the more downforce is generated.

Buy online or call us today to place your order! If you don't see what you're looking for, please contact us at 1-480-966-3040. We can help you find the right product for your vehicle to fit both your taste and your needs.

CUSCO has a brilliant record and history in the top categories of track racing, rallying, dirt trials and gymkhana. By staying continuously in touch with each cars potential and character, they can create settings for almost any car. From this experience in motorsports, they developed confidence in their CUSCO brand for street use. The CARROSSER competition products are developed one by one from their broad and long experience in competing in motorsports, and based on their extensive data and know-how. CUSCO responds to those who appreciate such matters, like driving a car or controlling its performance.

View all Cusco Diffusers products

	Name	View more
	Cusco Rear Diffuser Panel Subaru Impreza 00-05 Model Number: ST91225 FE000 View Price Give your car a high-tech aerodynamic look with this rear diffuser. A rear diffuser can redirect airflow coming from underneath the car to transition smoothly into the slower airstream at the rear of the car. Whether you're a racer or just want to look the part, you can depend on CUSCO for style, performance, light weight and durability.Features:Redirect airflowCustomizes exterior lookImproves stylingFitment:Subaru Impreza 00-05...
	Cusco Rear Diffuser Panel Subaru WRX 02-05 Model Number: ST91225 FE000 View Price Give your car a high-tech aerodynamic look with this rear diffuser. A rear diffuser can redirect airflow coming from underneath the car to transition smoothly into the slower airstream at the rear of the car. Whether you're a racer or just want to look the part, you can depend on CUSCO for style, performance, light weight and durability.Features:Redirect airflowCustomizes exterior lookImproves stylingFitment:Subaru WRX 02-05...
	Cusco Rear Diffuser Panel Subaru STI 02-05 Model Number: ST91225 FE000 View Price Give your car a high-tech aerodynamic look with this rear diffuser. A rear diffuser can redirect airflow coming from underneath the car to transition smoothly into the slower airstream at the rear of the car. Whether you're a racer or just want to look the part, you can depend on CUSCO for style, performance, light weight and durability.Features:Redirect airflowCustomizes exterior lookImproves stylingFitment:Subaru STI 02-05...
	Cusco Rear Diffuser Panel Subaru Forester 98-08 Model Number: ST91225 FE000 View Price Give your car a high-tech aerodynamic look with this rear diffuser. A rear diffuser can redirect airflow coming from underneath the car to transition smoothly into the slower airstream at the rear of the car. Whether you're a racer or just want to look the part, you can depend on CUSCO for style, performance, light weight and durability.Features:Redirect airflowCustomizes exterior lookImproves stylingFitment:Subaru Forester 98-08...
	Cusco Rear Diffuser Panel Subaru Forester XT 04-08 Model Number: ST91225 FE000 View Price Give your car a high-tech aerodynamic look with this rear diffuser. A rear diffuser can redirect airflow coming from underneath the car to transition smoothly into the slower airstream at the rear of the car. Whether you're a racer or just want to look the part, you can depend on CUSCO for style, performance, light weight and durability.Features:Redirect airflowCustomizes exterior lookImproves stylingFitment:Subaru Forester XT 04-08...