APR Performance

APR Carbon Fiber Rear Diffuser

2002-2007 Subaru WRX / STI

Ships for free in the 48 states

SKU: AB-820519We price match!

Only 1 left!


  • Lightweight and strong carbon fiber construction
  • Pulls the chassis closer to the ground at higher speeds by providing a vacuum channel beneath the vehicle
  • Race-inspired looks for daily drivers or weekend show cars
  • Highly effective for purpose-built race cars


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APR Carbon Fiber Rear Diffuser 


  • Made using super durable carbon fiber materials
  • Lightweight
  • Glossy carbon fiber finish
  • Channels high-speed air flow coming from underneath the car
  • Redirects the high-speed air flow to a low-pressure vacuum channel under the vehicle
  • Works with other aerodynamic components on your vehicle
  • Race-inspired looks for weekend show cars or daily drivers
  • Highly effective for those with purpose-built race cars



Here, you are looking at the APR Carbon Fiber Rear Diffuser. The rear diffuser has been designed to improve the aerodynamics and downforce. The rear diffuser will create a vacuum of low pressure under the vehicle to help pull the rear end of the vehicle closer to the ground. This will provide more aerodynamic refinement for those of you with purpose-built race cars, and it will provide race-inspired carbon fiber styling for those of you with daily drivers or weekend show cars. 


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