Subaru Impreza WRX/STI Carbon Fiber Rear Diffuser 2002-2007

The Subaru Impreza WRX/STI Carbon Fiber Rear Diffuser (2002–2007) by APR Performance is designed to improve aerodynamic efficiency and rear-end stability. As air flows beneath the vehicle, the diffuser channels high-speed airflow into the low-pressure area behind the car, reducing drag and generating additional downforce.

This results in smoother airflow under the chassis, improving the effectiveness of other aerodynamic components such as wings and splitters. The result is improved grip, stability, and control during high-speed driving and cornering.

Constructed from prepreg carbon fiber using autoclave manufacturing, the diffuser offers exceptional strength, rigidity, and light weight. A UV-resistant gloss clear coat ensures long-lasting protection against fading and environmental wear, maintaining a premium finish for years to come.

Key Features

• Prepreg Carbon Fiber Construction – Manufactured in the autoclave at high temperatures for superior strength and minimal weight.
• Improved Aerodynamics – Channels airflow from beneath the car for smoother transition into the rear low-pressure zone.
• Increased Downforce – Enhances rear-end stability and complements front aerodynamic components for balance.
• Reduced Drag – Encourages efficient air exit, improving overall aerodynamic performance.
• UV-Resistant Gloss Finish – Clear-coated with UV-stable epoxy resin for durability and shine.
• Direct Fitment – Designed for OEM fit on 2002–2007 Subaru Impreza WRX and STI models.

Specifications

• Material: Prepreg Carbon Fiber Composite
• Finish: UV-Protected Gloss Clear Coat
• Includes: Rear Diffuser, Mounting Hardware
• Installation: Professional installation recommended
• Brand: APR Performance
• Category: Aerodynamics / Exterior

Fitment

• Subaru Impreza WRX (2002–2007)
• Subaru Impreza WRX STI (2002–2007)