2009-2012 Audi A4 R-1 Rear Lip - 107421
Part #: ed_107421
NOTES:
Transform your 2009-2012 Audi A4 B8 with the Extreme Dimensions R-1 Rear Diffuser. Designed to complement the vehicle's rear styling, this diffuser provides a distinctive exterior appearance upgrade.
Product Description:
- The Extreme Dimensions R-1 Rear Diffuser is designed to enhance the rear appearance of your 2009-2012 Audi A4 B8. Developed specifically for vehicle-specific applications, this diffuser provides a clean styling upgrade while complementing the factory rear bumper design. Every Extreme Dimensions product is manufactured to meet our exacting standards of quality and durability. Our manufacturing processes and experience allow us to offer these quality products at a reasonable price. With Extreme Dimensions, high quality doesn't mean high prices. This rear diffuser is designed specifically for 2009-2012 Audi A4 B8 models and provides a vehicle-specific styling enhancement. Professional installation and preparation are recommended. Test fitting, sanding, trimming, filling, and painting may be required to achieve proper fitment and finish.
Extreme Dimensions: Upgrade Your Audi A4 with confidence
- Extreme Dimensions, a leading manufacturer since 2000, is passionate about providing top-tier aerodynamic parts for your Audi A4. They prioritize quality, value, and exceptional customer service, consistently exceeding industry standards.
- Unmatched Selection: Browse through our extensive catalog featuring over 5,000 options in carbon fiber, polyurethane, and fiberglass. Whether you're seeking a subtle upgrade or a complete aerodynamic makeover, we have the perfect parts to match your vision.
- Innovation at its Finest: Their team is dedicated to pushing boundaries and developing the latest aerodynamic components. With a massive U.S. headquarters and a substantial overseas facility, we house over 300 skilled employees who ensure innovation and quality in every product.
- Built to Last: Experience the difference with Extreme Dimensions. Their parts are crafted from high-quality materials for superior strength, durability, and a flawless look. Invest in confidence - choose Extreme Dimensions for the next aerodynamic upgrade for your Audi A4.
Material Information:
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.
Shipping & Handling:
We understand you want your new parts as soon as possible! We work hard to process and ship orders usually within 1-2 business days.
Estimated Delivery Times
While we can't guarantee exact delivery dates, most domestic orders are delivered within 3-7 business days after shipment.
Shipping Costs
Shipping costs are calculated at checkout and depend on the weight and destination of your order. We offer combined shipping wherever possible. Offer will be calculated at checkout.
Tracking Your Order
Once your order ships, you'll receive an email with a tracking number that allows you to follow your package's progress. Large items must ship by a freight carrier, be sure to follow the instructions emailed.
For questions or concerns about your order, please feel free to contact us at (702) 900 2346 | (775) HI-BOOST
⚠️ WARNING: California Proposition 65:
Items sold on this website may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
- Materials: May include lead, nickel, and carbon black.
- Safety: Always wash hands after handling automotive parts.
- More Info: www.P65Warnings.ca.gov
FAQ
Why does the hood require hood pins?
Aftermarket FRP and carbon fiber hoods require auxiliary hood pins because composite material expands, contracts, and flexes differently than OEM metal. Over time, this can shift latch alignment, and at highway speeds the reduced weight of a composite hood combined with aerodynamic lift creates upward force on the leading edge. Hood pins provide a mandatory secondary safety measure that eliminates the single point of failure.
Why Aerocatch? Aerocatch latches are the industry standard because they sit nearly flush with the hood surface — no protruding pin shafts. They use a spring-loaded, quarter-turn locking mechanism that clicks into a detented, closed position, giving both visual and tactile confirmation that the hood is secure. Unlike traditional hood pins, there is no separate R-clip or lanyard to lose, and the integrated assembly is available in finishes that blend cleanly into painted or carbon-fiber hoods. Originally proven in FIA-sanctioned racing series, they carry motorsport-grade reliability onto street-driven builds.
Hood pins are typically installed at the leading edge of the hood, approximately 6–8 inches inward from each headlight corner, with a solid backing plate on the underside. Never install through unsupported laminate. Professional paint and body shop installation is strongly recommended; mount all hardware before painting to ensure proper alignment and sealant application.
When reading the product description for one of the hood designs for an BMW F32, it says “Prep Work is Required”
What do you mean by this?
Fiberglass parts always require prep work before they can be primed and painted. This product is made with fiberglass material; therefore, it will exhibit chips, breaks, cracks, waves, scratches and holes which require modification. It is necessary to dry fit and drill mounting holes and perform body work before painting. Cutting and adding fiberglass may be required for proper fitment. Ships direct from the manufacturer or a distributor. Primer finished. Hand layup is the manufacturing process used for the majority of our fiberglass parts. Hoods require hood pins. We do not offer any guarantee of fitment on vehicles that have been involved in accidents and/or have body damage or customization.