Triple R Composites Audi TTS/S-Line MK3 Pre Facelift Set of 4 Diffuser Fins
Give your Audi TTS/S-Line MK3 a sharper, more purposeful rear look with this set of 4 Triple R Composites diffuser fins. Designed to sit under the rear bumper, they add a clean, sporty finish that matches the aggressive style of the car.
These fins help break up the flat area under the back of the car and give the rear bumper more depth. The result is a more focused, performance-inspired appearance that suits both daily driving and show use.
Why choose this kit
- Sporty, OEM-plus style that suits the TTS/S-Line MK3 shape
- Set of 4 fins to complete the rear bumper look
- Made from strong Nylon 12 plastic for long lasting use
- Media blasted and coloured black for a smooth, factory-like finish
- Supplied with a stainless steel fitting kit for secure installation
The fins are manufactured in Nylon 12, a high quality engineering plastic. It is light, tough and resistant to everyday road use. The surface is media blasted to remove shine and then coloured black, so the parts blend in neatly with the rear diffuser area.
The included stainless steel fitting kit helps keep everything tight and rust free, even in wet UK conditions.
Fitment and compatibility
This set is designed for Audi TTS MK3 pre facelift models from 2014-2018. It also suits equivalent TT S-line models with the same rear bumper style.
Please check your rear bumper matches the product design before fitting.
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.

