Audi A4 S-Line / S4 B9.5 Dry Carbon Fibre Rear Diffuser

Transform the rear end of your Audi with this precision-engineered dry carbon fibre rear diffuser. Designed to complement the aggressive lines of the S-Line and S4 variants, this diffuser delivers a race-inspired aesthetic that commands attention from every angle — turning the factory look into something truly purposeful.

Crafted using a genuine dry carbon fibre process with a stunning 3x3 twill weave finish, the result is a surface that catches light beautifully while keeping weight to an absolute minimum. The shimmering gloss clearcoat ensures the weave pattern remains vivid and protected, making this an upgrade that looks as good on the road as it does on the track.

Engineered to OEM-grade tolerances using CNC-formed moulds and test-fitted on real vehicles, this diffuser slots seamlessly into place without any cutting, trimming, or modification. All necessary adhesive tapes and fixing hardware are included, making installation straightforward for any enthusiast or professional installer.

Elevate your Audi's rear presence with an upgrade that speaks the language of performance. Add this carbon fibre rear diffuser to your build today and experience the difference that genuine quality makes.

Audi A4 S-Line / S4 B9.5 Sedan (2020-2022)

Dry Carbon Fibre, 3x3 Twill Weave with Gloss Clearcoat

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Delivery estimates

Estimated delivery dates are shown on each product page and reflect the full manufacturing and shipping timeline. These are accurate to each product type and updated regularly.

Manufactured to order

The majority of our catalogue is produced to order. This ensures every component is made fresh to specification. Delivery estimates on each product page account for this production time in full.

Express shipping

Express shipping is available on selected products and will appear as an option at checkout where applicable.

Stock availability

Occasionally items may be available for faster dispatch from existing stock. If you need a part urgently, reach out before ordering and we'll confirm availability.

Vanté Automotive does not accept any liability for damage caused to a vehicle during installation of this product. Professional installation is recommended for all products. By purchasing this product you agree to these terms.