2009-2012 Audi A4 B8 4DR R-1 Rear Diffuser - 1 Piece - 119542
Part#: ed_119542
Extreme Dimensions
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Fullerton, CA
Upgrade the appearance and performance of your 2009-2012 Audi A4 with the B8 4DR R-1 Rear Diffuser from Extreme Dimensions. This accessory is designed to enhance both the aesthetics and potentially improve the functionality of your vehicle. The Diffusers is engineered to work harmoniously with your car’s aerodynamic design, crafted from premium Plastic materials, offering a bold, aggressive look that accentuates the sleek lines of your Audi A4.
The B8 4DR R-1 Rear Diffuser is specifically designed to integrate seamlessly with your vehicle's existing profile, ensuring both form and function.
Made from lightweight yet durable materials, the B8 4DR R-1 Rear Diffuser adds little to no extra weight, and its aerodynamic shape may help reduce drag, potentially improving your car's performance.
Professional installation is recommended for the B8 4DR R-1 Rear Diffuser. While this Diffusers is made to fit the 2009-2012 Audi A4, please note that mounting hardware is not included. You will need to source your own screws, bolts, and possibly custom brackets to ensure a secure and precise fit.
One of the most notable features of the B8 4DR R-1 Rear Diffuser is its customizable finish. You can paint it to match your vehicle's color, giving you the opportunity to create a personalized look that reflects your individual style.
At Extreme Dimensions, we take pride in the craftsmanship of our products, and the B8 4DR R-1 Rear Diffuser is no exception. Each unit undergoes stringent testing to meet performance standards and ensure quality.
If you're looking to elevate the style and performance of your Audi A4, the B8 4DR R-1 Rear Diffuser from Extreme Dimensions is an excellent choice. Combining advanced design with top-tier materials, it’s the perfect way to enhance your vehicle.
Audi DiffusersA4 DiffusersExtreme Dimensions DiffusersAudi Plastic DiffusersA4 Plastic Diffusers
will not fit s-line models.





New: A brand-new, unused, unopened, item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in our retail store. To be installed professionally by a bodyshop with a valid automotive repair business license. Plastic exterior parts will require minimal prep work before they can be painted. Usually only light sanding and in rare occassions filler or trimming is required to make absolutely smooth and flush. To be installed professionally by a bodyshop with a valid automotive repair business license. Ships direct from the manufacturer or a distributor. Genuine amorphous or crystalline plastic material. We do not offer any guarantee of fitment on vehicles that have been in involved in accidents and/or have body damage or customization.
Extreme Dimensions diffusers are aerodynamic accessories designed for aftermarket customization. Made primarily from polyurethane, they offer greater flexibility and durability compared to fiberglass. However, some preparation work is usually required, such as drilling holes, applying filler, using a flex paint agent, sanding, and priming to ensure a perfect fit and finish.
These diffusers generally fit beneath the rear bumper, and depending on the vehicle model, the bumper may need to be modified to accommodate the diffuser. It's important to choose a diffuser that matches your specific bumper style, trim, or aftermarket modifications for a proper fit.
Installation typically requires separate mounting hardware, which is not included in the package. Commonly used items include L-brackets, bolts, screws, and washers. L-brackets help secure the diffuser to the vehicle’s chassis, while screws and bolts ensure a snug fit. In some cases, additional reinforcements may be necessary based on the diffuser design.
For best results, professional installation by a custom shop experienced with polyurethane parts is recommended. Regular auto repair shops may lack the expertise needed for proper fitment.
Disclaimer: Extreme Dimensions diffusers are intended strictly for off-road and show use. They are not street legal, and Extreme Dimensions does not take responsibility for damages or injuries caused by misuse on public roads.