2008–2011 Audi A4 B8 Sedan Carbon Fiber Rear Bumper Diffuser

Product specifications

Carbon Fiber Rear Bumper Diffuser for 2008–2011 Audi A4 B8 Base Sedan

Carbon Fiber Construction

The diffuser is produced with 3x3 woven carbon fiber and finished with a gloss UV-protected clear coating. The exposed carbon weave complements other carbon fiber exterior upgrades while adding a more distinctive lower rear profile to the A4 B8 Base Sedan.

The protective clear finish is intended to help preserve the visible carbon surface and gloss appearance during normal exterior use.

Replacement-Style Rear Diffuser

This is a replacement-style rear bumper diffuser designed to take the place of the factory lower diffuser rather than install over it as a simple add-on lip.

The product is intended primarily as an exterior styling upgrade. No specific downforce, drag reduction or handling improvement is claimed without product-specific aerodynamic testing.

Installation

Installation requires removal of the original lower rear diffuser before fitting the carbon fiber replacement. Self-tapping screws are included according to the current product specification.

Test-fit the diffuser before final installation and confirm that the mounting areas, bumper edges and exhaust openings align correctly. Professional installation is recommended if you are unfamiliar with rear bumper trim removal or panel alignment.