Triple R Composites BMW M4 F82 Rear Diffuser
Give your BMW M4 F82 a sharper, more aggressive rear end with this Triple R Composites rear diffuser. It is designed to sit under the rear bumper and reshape how the air leaves the back of the car, while adding a clean, performance look.
- Sporty, aggressive look at the rear of the car
- Helps tidy airflow under the car for a more stable feel
- Gloss black gel coat finish for a deep, high shine
- Supplied with a full stainless steel fixing kit
- Designed specifically for BMW M4 F82 models (2014-2020)
What this rear diffuser does
A rear diffuser is the lower section of the rear bumper that shapes the air as it leaves the underside of the car. By guiding this airflow, it can reduce turbulence and help the car feel more settled at higher speeds. On the M4 F82, it also fills out the rear bumper area, giving the car a wider and more focused stance.
This Triple R Composites diffuser uses bold lines and fins to echo track car styling without being over the top. The gloss black finish blends well with most body colours and factory trims, so it looks like it belongs on the car.
Finish and materials
The diffuser comes in a gloss black gel coat, so the surface is smooth and shiny straight out of the box. There is no need for extra paint unless you want a custom colour. The included stainless steel fitting kit is designed to resist rust, making it suitable for daily use in all weather.
Fitment and compatibility
This rear diffuser is designed to fit BMW M4 F82 models from 2014 to 2020. Please make sure your car is an M4 F82 and that the rear bumper and exhaust layout match this style before ordering.
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.





