APR Carbon Fiber Rear Diffuser

15-23 Dodge Challenger SRT Hellcat

AB-723500

Diffusers enhance aerodynamic performance by managing airflow beneath the car. They channel high-speed air from underneath into the low-pressure vacuum at the rear, reducing turbulence and increasing downforce. Working in harmony with wings and splitters, diffusers improve stability, grip, and overall handling—making them essential for both high-performance street and track applications.

Diffusers are critical aerodynamic components designed to optimize a vehicle’s performance by enhancing underbody airflow. As a car moves forward, it displaces air, creating a low-pressure vacuum at the rear. This pressure difference can disrupt stability and limit the effectiveness of other aerodynamic parts. The diffuser addresses this by redirecting high-speed airflow from beneath the car, allowing it to expand and transition smoothly into the low-pressure rear zone. This controlled expansion reduces turbulence, minimizes drag, and boosts downforce. The result is improved vehicle stability, enhanced grip, and better efficiency from complementary components such as rear wings and front splitters. By smoothing and accelerating the airflow beneath the car, diffusers not only help keep the vehicle planted at high speeds but also elevate the performance potential of any aerodynamic setup. Whether for motorsport or street performance, a well-designed diffuser is key to unlocking balanced handling and superior traction.

• Carbon Fiber Construction This component is formed in the autoclave at high temperatures using pre-pregnated carbon fiber manufacturing processes, for high strength and low weight.
• UV Resistant Coating

APR Performance engineers carbon fiber aerodynamic components designed to add real downforce and a motorsport look to street and track builds. Known for its GTC-series wings and complete aero kits, APR offers splitters, diffusers, canards, air ducts, and exterior add-ons across many platforms—built with composite construction aimed at strength and low weight.