At Automotive Passion, we’ve developed a full pre-preg dry carbon fibre rear diffuser with integrated bumper side elements for the Audi RS3 8Y GEN 2 FL. This design brings a motorsport edge to the RS3’s rear profile while maintaining a factory-quality aesthetic.

Performance wasn’t an afterthought—our diffuser features extended aero fins on the underside, engineered to streamline turbulent airflow and improve aerodynamic stability at high speeds. Using our proprietary simulation software, we tested a wide range of wind conditions across CAD models to optimize airflow dynamics and ensure real-world effectiveness.

Each component is crafted from the highest-grade dry carbon fibre and finished with market-leading Glasurit clear coat and UV. Finish options include Glossy Twill, Glossy Forged, and Matte Twill Carbon, allowing for tailored aesthetic preferences.

Installation:

The diffuser is a direct replacement for the factory unit, utilizing all original mounting points and clip locations. For best results, we recommend professional installation by an experienced body shop, as the rear bumper removal is required.

Kit Includes:

x1 Audi RS3 8Y GEN 2 FL – Dry Carbon Rear Diffuser

Fit:

Audi RS3 8Y GEN 2 FL Saloon/Sedan 2025 onwards.

Audi RS3 8Y GEN 2 FL Sportback 2025 onwards.

2 YEAR CLEAR COAT/UV WARRANTY

Pair the RS3 8Y carbon diffuser with our Dry Carbon Front Splitter and Carbon Side Skirts to complete the aero package and give your RS3 a cohesive, track-ready stance.

install guide