BMW F80 M3 F82 F83 M4 F1 LED Carbon Fibre Rear Diffuser

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F1 Style Carbon Fibre Rear Diffuser with LED Brake Light for BMW F80 M3, F82 & F83 M4

Inspired by F1 and global motorsport events, this full width rear diffuser has a built-in LED light that is connected to your existing brake light. It provides a much more aggressive look with improved aerodynamics and air channelling. Carbon fibre represent the ultimate race look and the tied-in side extensions flows with the body lines of the F8X M3/M4 perfectly.

The LED is wired to your existing brake light so they would come on when you depress the brake pedal. By default the LED is on constantly as per your brake light. You can also choose to wire the LED so they flash when brake is depressed, using one of the wires supplied.

The product is finished off with several layers of clear coat for the added shine and protection. Excellent quality and unique look guaranteed!

Material: CFRP + Carbon Fibre with built-in LED

Content: 1 x Rear Diffuser

Finish: Glossy Carbon Fibre

Compatible With:

F80 M3 Saloon & M3 Competition

F82 M4 Coupe & M4 Competition

F82 M4 Convertible & M4 Convertible Competitition

Size: 180*16*80cm

Installation: Removal of existing diffuser and connection to your existing brake light is required. The diffuser is supplied with the LED and wiring harness. We recommend a certified auto electrician to carry out the wiring. Installation will involve removal of rear bumper for fitting and wiring. Please see video below.

Product Photos:



Installed With LED Off:


Installed With LED On (brake depressed):





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2 Reviews Hide Reviews Show Reviews

  • 5

    Posted by Laurent on 19th Sep 2021

    Delais livraison respecté Service très bien Haute qualité

  • 5
    The product is amazing and fit my car perfectly! It makes a worlds of difference to my 2019 BMW M4 Competition! It stands out so much compared to my my old carbon one! Best purchase ever and it’s so cheap! eBay retail the same thing for £1700+

    Posted by Ehsan on 23rd Oct 2019

    Im so happy with the product I’ve had so many people ask me where I got it from etc