Vehicle Fitment
| Make | Model | Year |
|---|---|---|
| BMW | 4-Series | 2014-2020 |
Product Details
AF-1 Style Wide Body Rear Diffuser by Aero Function®. Add aggressive visual style to the lower section of your rear bumper cover with an add-on Rear Diffuser from Aero Function. Contoured to fit perfectly on your vehicle, the rear diffuser skirt installs easily in minutes. Advanced design and materials ensure durability and resistance to cracking or deterioration. Installation typically requires sanding, trimming, and filling prior to painting, thus, professional installation is recommended.
Specifications
| Material: Fiberglass |
| Color: Unpainted |
| Primed: Yes (gray) |
| Quantity: 4-piece |
Features
- Enhances aerodynamics with contours that reduce airflow drag
- Installation can be done with any method of your choice such as double-sided tape or weather stripping adhesive (not included)
- 3-year manufacturer warranty
- Intended for off-road or show use only
While larger rear spoilers look great on a vehicle and improve airflow, they can often be so close to the ground that backing out of angled driveways causes their early demise. The Rear Diffuser by Aero Function lets you add the aggressive looks and enjoy the style of an air dam or lowered spoiler without the reduction in ground clearance that comes with them. This add-on piece mounts directly to the lower section of your rear bumper cover easily, and all necessary instructions are included. You'll also enjoy the benefits of improved aerodynamics with contoured wind strakes that reduce drag on the back of your vehicle.
Advanced computer aided design and high-tech manufacturing processes ensure all Aero Function components fit evenly against every panel and contour of your specific make and model. Once parts have been prepped and installed on your vehicle, they achieve a look that matches the quality of original equipment without the gaps, uneven edges, and poor visual continuity that plague parts from inferior competitors. Depending on vehicle application, components may be produced from carbon fiber plastics, fiberglass composites, or polyurethane polymers. Aero Function is well-respected throughout the industry for the development of each of these lightweight composite materials which feature extremely high levels of strength, rigidity, and superior impact absorption. Even under the harshest climates and conditions, Aero Function parts have proven their ability to maintain integrity without warping or cracking for long periods of time. Add-on aero pieces can be installed using any method of your choice such as double-sided tape or weather stripping adhesive, and Aero Function backs what they build with a 3-year warranty against defects.
Founded in the late 1990s in Fullerton, California, Aero Function® is part of the Extreme Dimensions group of premiere automotive parts manufacturers. Drawing on a wide pool of engineering talent, Aero Function specializes in producing aerodynamic accessories for high end luxury vehicles made from advanced composite polymers they have developed in house. Aero Function is known worldwide for their carbon fiber plastics (CFP), handmade fiber glass composites, and Pur Rim polyurethane plastic composites that set industry standards for quality of fit, light weight, and durability in the toughest of climates. Aero Function offers a wide range of stylish products to customize your vehicles with add-on aero pieces such as front spoilers, lips, side skirts, roof wings, and trunk caps. They also offer light weight replacement bumpers, bumper covers, hoods, and trunk lid panels designed for the discriminating performance enthusiast that seeks increase performance while they add a high-dollar look to their vehicle. All components are designed for your specific make and model to fit right and look great for the long haul.
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