Upgrade your car's aerodynamics and aggressive stance with our range of rear diffusers. Designed to enhance downforce, improve airflow, and deliver a race-inspired look, our diffusers are engineered for a precise fit across a wide range of vehicles.
- Gloss and matte finish options available
- Manufactured in high-quality ABS plastic and carbon fibre
- Direct OEM-style fitment — no cutting or modification required
- Compatible with popular makes and models including VW, Audi, BMW, and more
Whether you're pushing performance on track or refining your road presence, our rear diffusers are built to deliver. Shop by vehicle model to find your perfect match.
ECS Tuning Carbon Fibre Rear Diffuser - A4/S4 B9
Sale price£989.34 GBP
ECS Tuning Carbon Fibre Rear Diffuser - A4/S4 B8
Sale price£998.78 GBP
ECS Tuning Carbon Fiber Rear Diffuser - Mk7.5 GTI
Sale price£762.65 GBP
ECS Tuning Carbon Fibre Rear Diffuser - RS3 8V
Sale price£946.83 GBP
Save £9.00
BMW 4 Series Coupe Carbon Fibre / Gloss Black Rear Single Exit Diffuser (F32, F33, F36 2013 - 2018 Models)
Sale priceFrom £239.99 GBP
Regular price£248.99 GBP
Save £69.00
AP Design Diffuser Carbon fibre - TTRS 8S
Sale price£1,311.00 GBP
Regular price£1,380.00 GBP
AIRTEC Motorsport Rear Diffuser Extension for Fiesta MK8 ST-200
Sale price£53.54 GBP
Save £11.00
BMW 1 Series M135i / M140i Carbon Fibre / Black Rear Diffuser (2016 - 2019 Models)
Sale priceFrom £277.99 GBP
Regular price£288.99 GBP
Save £7.00
BMW 4 Series Rear Diffuser F32 / F33 / F36 (2014 - 2019)
Sale price£163.99 GBP
Regular price£170.99 GBP
Save £13.00
BMW 4 Series Carbon Fibre Diffuser F32 / F33 / F36 (2014-2019 - Left Tailpipes)
Sale price£336.99 GBP
Regular price£349.99 GBP
Save £7.00
BMW F32 / F33 / 435i / 420i / M Carbon Fibre / Black Diffuser (2014 - 2019)
Sale priceFrom £163.99 GBP
Regular price£170.99 GBP