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Exterior Components› Decals and Moldings

Maxton Design

Facelift Side Skirt Diffusers

Name: Facelift Side Skirt Diffusers
Brand: Maxton Design
SKU: AU-A4-B9F-SD1G

$151.94

SKU: AU-A4-B9F-SD1G

Free Shipping over $200

$100 Minimum Order

30 Days Return

DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Maxton Design Facelift Side Skirt Diffusers are designed to enhance the visual appeal of your Audi A4 B9. Made from durable ABS plastic, these diffusers add a sporty character and elegance to your vehicle's side profile. They are crafted using 3D laser scanning to ensure a precise fit, integrating seamlessly with other Maxton Design styling components for a cohesive look.

They are treated with UV protection and are ready for installation, though preparation may be required if painting a textured version. Maxton Design recommends professional installation by experienced auto body shops.

Show original supplier description

Enhance the aggressive stance of your Audi A4 B9 with the Maxton Design Facelift Side Skirt Diffusers. These styling elements mount along the bottom of the car's side skirts, visually widening and lowering the vehicle's silhouette for a more dynamic appearance. Engineered with precision using 3D laser scanning of the actual car body, these diffusers guarantee a perfect fit and create a consistent line with other Maxton Design styling package components. They are treated with UV protection for durability and come ready for installation, though painting may require additional preparation for textured versions. The package includes both the left and right side skirt extensions along with a dedicated mounting kit. Beyond aesthetics, these side splitters also contribute to the car's aerodynamic profile by increasing downforce, further complementing the sporty character Maxton Design aims to achieve. Installation is straightforward, but professional auto body shop experience with visual modifications is highly recommended. This product is compatible with the Audi A4 Avant B9 (2017-2018) and Audi A4 Sedan B9 (2017-2018). It also fits the Audi A4 B9 (2017-2019) with 2.0T FWD or Quattro engines.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

Brand	Maxton Design
Part Number	AU-A4-B9F-SD1G
Category	Exterior Components

Videos

Maxton Design side splitters install - Audi S4 & A4 (S-Line) 2019 B9

Audi B9 Q5/SQ5 - Maxton Design Side Skirt Install - WATCH FIRST!

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Maxton Design Side Skirt Install | Audi S5 Sportback B9

How to install SIDE SKIRTS ABS Gloss Black | #StreetPlus

Maxton Design Kit One Year Later | Audi B9 Q5/SQ5

Fitting a styling kit to an Audi RS4! | Maxton Design UK

How to install REAR SPLITTER ABS Gloss Black | #StreetPlus

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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