20222024 Subaru WRX Rear Diffuser V2
Track-Ready Performance. Built in the USA. Pure Aggression.

Complete your WRXs rear-end with the AFD V2 Rear Diffuser a true Track Spec upgrade engineered for real downforce, serious style, and rugged durability. Unlike plastic alternatives, this diffuser is constructed from aerospace-grade lightweight aluminum, CNC-cut for precision, and powder-coated for maximum resistance against the elements.

Designed for the 20222024 Subaru WRX, this diffuser not only looks aggressive it works. Whether you’re on the street or at the track, this piece improves airflow, reduces drag, and enhances rear-end stability by utilizing genuine aerodynamic principles.

Key Features:

• Vehicle Fitment: 20222024 Subaru WRX

• True Track Spec Design: Functional rear diffuser built to increase downforce and reduce drag

• Aerospace-Grade Aluminum: No ABS plastic lightweight, strong, and built to perform

• Made in the USA: CNC-machined and professionally powder coated for durability and finish

• Pre-Drilled + Hardware Included: Ready for install right out of the box

• Fitment Guaranteed: Designed specifically for your VB WRX

• DIY Friendly: Professional install recommended, but weve got a detailed install video ready to help you get it done

Why It Works:
As air flows under your WRX at speed, this diffuser accelerates and channels that airflow, reducing turbulence and helping stabilize the rear. Vertical fins keep airflow clean and efficient, increasing performance and giving your WRX that aggressive, motorsport-inspired edge.

Ready to go full aero? Pair it with our front lip and side skirts to build the ultimate WRX street or track setup.

A rear diffuser is an automotive aerodynamic modification typically found mounted on the vehicles underbody located at the rear of the car, underneath the rear bumper. As a vehicle is in motion, air flowing in the underbody is typically at high-speed and has low-pressure. The design and purpose of a diffuser are to help reduce drag and to create downforce by facilitating the airflow underneath the vehicles underbody. A diffuser is used to increase the air volume along its full length, thus creating a void that must be filled by air. This in turn creates a Venturi effect, meaning the air flow is accelerated at the beginning of the diffuser creating a low pressure, thus creating downforce. As the air travels along the full length of the diffuser, the high-velocity air is eased back into standard velocity matching the ambient speed at the rear of the vehicle reducing overall drag. With the addition of vertical fins attached to the diffuser, this helps to optimize the diffusers efficiency by ensuring that all air drawn into the diffuser is from the underbody and not from the upper body surfaces. A diffuser can be further tune-up with the addition of a front splitter to help mediate the underbodys airflow.