Rax Performance

2013-2016 B8.5 Audi A4 Sedan Unpainted Rear Diffuser

SKU: AUDI A4 (13)


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

Get the Rax Performance Style Rear Diffuser for your A4 and make it stand out! The A4 model has been designed to be aggressive, stylish and irresistible. Unlock its full potential with this rear diffuser today.



  • Fits: 2013 2014 2015 2016 Audi A4 Sedan
  • Note: This product is unpainted. It can be painted in any colour of choice.



This product comes with pre-drilled holes. A complete installation kit is included (e.g., bolts, screws, double-sided strong tape). However, an installation by a professional is always recommended. That's why Rax Performance has made more than 170 installation partners across Canada. Contact us now, and we will connect you with a professional in your area at the absolute best prices guaranteed.

Customer Reviews

Based on 1 review
Daniel Martinez
Solid Choice for B8.5 A4

Bought the Unpainted Rear Diffuser for my B8.5 Audi A4 Sedan from Rax Performance. It fits seamlessly, giving the car a more distinct look. Quick delivery to Atlanta. Ideal for A4 owners seeking a customizable upgrade.