Triple R Composites Ford Fiesta MK8 ST Diffuser Fins Only
Give the rear of your Ford Fiesta MK8 ST a sharper, motorsport inspired look with this set of rear diffuser fins.
Designed using full 3D scans of the Fiesta MK8 ST, these fins follow the shape of the rear bumper for a neat, factory style fit. They add depth and detail to the lower bumper area, helping your ST stand out without looking over the top.
- Supplied as a set of 4 rear diffuser fins
- CAD designed from vehicle scan data for precise fit
- Nylon 12 construction – strong, durable and heat resistant
- SLS 3D printed, then media blasted and finished in black for an OEM trim look
- Stainless steel fitting kit included
The fins are made from Nylon 12, a tough engineering plastic that copes well with daily road use and temperature changes. SLS (Selective Laser Sintering) 3D printing allows complex shapes to be produced with consistent quality, so the parts sit tight to the bumper.
The black finish is designed to match typical OEM bumper trims, so the fins blend in with the existing rear diffuser while still giving a more aggressive appearance. Any effect on airflow will be small – these parts are mainly for styling rather than performance gains.
Fitment and compatibility
Designed to fit Ford Fiesta MK8 ST models from 2018-2021.
Please check your car is the correct MK8 ST model before fitting. Use the vehicle lookup on our site or check the Vehicle Fitment tab for full details before ordering.
Supplied with a stainless steel fitting kit for a secure install. Professional fitting is recommended if you are unsure about working on exterior trim parts.
Triple R Composites UK Authorised Installer & Distributor.




