Triple R Composites Audi S1 8X Rear Finned Diffuser
Give your Audi S1 8X a sharper rear end with this full replacement rear finned diffuser. It is designed to follow the lines of the factory bumper while adding a more aggressive, motorsport style look.
A rear diffuser helps smooth and guide the air as it leaves the back of the car. The added fins give the rear a lower and wider appearance, and can help reduce turbulence under the bumper at higher speeds. The result is a cleaner, sportier finish that suits the character of the S1.
- Full replacement diffuser for Audi S1 8X models
- Finned design for a more aggressive, performance look
- Supplied in gloss black gel coat for a high shine finish
- Designed to follow the shape of the factory rear bumper
- Suitable base for painting or wrapping if desired
Fitment and installation
This diffuser fits Audi S1 8X models from 2014 to 2018 that use the standard rear bumper.
The original rear diffuser must be removed before installation. The new diffuser overlaps the original diffuser opening and must be bonded directly to the rear bumper.
The kit is supplied as pictured in a gloss black gel coat. Slight sanding along the top edge may be required to achieve the best possible fit where the diffuser meets the bumper.
Installation uses the supplied fixings along with a suitable polyurethane adhesive to secure the diffuser in place. For the best result, we recommend fitting by a competent body shop or experienced installer.
Use the vehicle lookup on our site or check the Vehicle Fitment tab for full details before ordering.
Triple R Composites UK Authorised Installer & Distributor.






