Rax Performance

2013-2016 B8.5 Audi S4 Sedan Carbon Fiber Rear Diffuser

SKU: AUDI A4 (22)


Aero products are shipped the same day and typically arrive within 2 to 3 business days for domestic deliveries. However, shipping times and costs may differ based on the product. For further details, please refer to our Terms and Conditions and other relevant policies.

Rax Carbon Products employs a blend of unidirectional, 1x1, and 2x2 carbon fiber weaves to attain an optimal balance of lightweight design and superior strength. Our aerodynamic parts utilize vacuum-formed technology to remove excess resin, thereby reducing weight without compromising on structural integrity. This meticulous
manufacturing process ensures a high degree of precision in fit and finish, assuring you of components that seamlessly align with factory specifications for shut lines and contours.

It is imperative that all products be professionally installed. We strongly advise against personal attempts at installation. Each product comes equipped with pre-drilled holes and a comprehensive installation kit, including elements such as bolts, screws, and high-strength double-sided tape. Despite these provisions, professional installation remains our recommendation for optimal product performance. Tofacilitate this, Rax Performance has partnered with over 170 professional installers throughout Canada. Reach out to us today and we will help you connect with an installation expert.

Product Description

Looking to give your Audi S4 a stylish and aggressive look? Look no further than the Rax Performance StyleRear Diffuser. Made from genuine high-quality pure carbon material, this rear diffuser is designed to unlock the full potential of your S4, adding an irresistible touch of style that is sure to turn heads wherever you go.

This rear diffuser fits the 2013, 2014, 2015, and 2016 Audi S4 sedan models, but is not compatible with the A4 Standard, S-Line, and RS4. It comes with pre-drilled holes and includes a complete installation kit with bolts, screws, and double-sided strong tape. While installation can be done yourself, we recommend having a professional do it for you. Fortunately, Rax Performance has over 170 installation partners across Canada, so we can connect you with a professional in your area at the absolute best prices guaranteed.

This rear diffuser is protected with three clear coat finish for long-term durability, ensuring that your investment will last for years to come. So why wait? Give your Audi S4 the upgrade it deserves with the Rax Performance StyleRear Diffuser today!

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Customer Reviews

Based on 2 reviews
Alex Tremblay
Best shop

Upgraded my 2015 Audi S4 with Rax Performance's Carbon Fiber Rear Diffuser. Perfect fit, high-quality, and elevates the car's aesthetic. Quick delivery to Boston. A fantastic choice for S4 enthusiasts!

Quality and fitment is AMAZING

Just picked up the Carbon Fiber Rear Diffuser and spoiler for my 2015 S4 from Rax Performance in Brampton, Ontario. It was a smooth and quick process. The diffuser fits seamlessly and the quality is superb, giving my Audi a much sportier look. Really happy with this upgrade