Extreme Dimensions 107421 R-1 Rear Diffuser for Audi A4

The Extreme Dimensions R-1 Rear Diffuser is a precision-engineered aerodynamic component designed to enhance the aggressive styling of your 2009-2012 Audi A4 4-door sedan. This one-piece diffuser installs beneath the rear bumper to create a more aggressive, performance-oriented appearance while improving airflow management under the vehicle.

Key Features:

• Constructed from high-quality Duraflex material for durability and flexibility
• One-piece design simplifies installation and ensures consistent fitment
• Adds aggressive racing-inspired styling to the rear end
• Arrives in unpainted finish, ready for professional paint preparation and color matching
• Professional installation recommended for proper fitment and finish

Fitment Note: This diffuser is designed for standard 2009-2012 Audi A4 4-door models and will not fit S-Line equipped vehicles, which feature different rear bumper configurations.

Like all Duraflex products, this diffuser requires proper surface preparation, test fitting, and professional painting to achieve optimal results. Minor adjustments during installation are normal for fiberglass and composite body components.