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BMW F80 M3 / F82 F83 M4 Carbon Fiber Rear Diffuser with Integrated F1 LED Brake Light (2015–2020) | F8X

Motorsport Aero Fins | Plug-and-Play F1 Third Brake Light | 3K 2x2 Twill Weave Carbon Fiber

$849.95 USD
$949.95 USD $849.95 USD
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PRODUCT DETAILS

Inject track-inspired styling and enhanced visibility into your BMW F8X with the Carrera Custom Garage Carbon Fiber Rear Diffuser featuring an Integrated F1-Style LED Brake Light. Engineered specifically for the 2015–2020 BMW F80 M3 Sedan, F82 M4 Coupe, and F83 M4 Convertible, this rear aerodynamic valance combines deep center aero fins with a high-intensity red LED brake light module.

Handcrafted from premium 3K 2x2 twill weave carbon fiber and finished with an ultra-glossy, UV-resistant resin clear coat, this diffuser provides exact OEM bumper alignment, thermal protection against exhaust heat, and long-term durability.

Specifications

Feature Specification
Brand Carrera Custom Garage
Chassis Compatibility BMW F80 M3 / F82 M4 / F83 M4 (F8X Platform)
Model Years 2015, 2016, 2017, 2018, 2019, 2020
Material Real 3K 2x2 Twill Weave Carbon Fiber (CFRP)
Finish High-Gloss UV-Protected Clear Coat
Lighting Unit Integrated Ultra-Bright Red F1-Style LED Brake Light
Exhaust Clearance Fits Stock Quad Tips & Aftermarket Systems up to 102mm (4")
Installation Direct Clip-In Replacement & OEM Screw Mounting


Key Highlights

  • Integrated F1 Brake Light: Central high-intensity red LED module increases vehicle rear visibility and delivers an authentic motorsport appearance.

  • 3K 2x2 Twill Carbon Weave: Handcrafted carbon fiber offering high strength-to-weight ratio and precise weave uniformity.

  • UV & Thermal Shielding: Sealed in a heat-resistant gloss clear coat designed to prevent resin yellowing and heat fade near exhaust tips.

  • Aerodynamic Styling: Extended lower air channels improve underbody airflow detachment while framing factory or aftermarket quad exhaust systems.

Vehicle Compatibility Guide Compatible only with factory BMW F8X M rear bumpers:

  • BMW M3 Sedan (F80): 2015–2020

  • BMW M4 Coupe (F82): 2015–2020

  • BMW M4 Convertible (F83): 2015–2020

Note: Fits original factory F80 M3 and F82/F83 M4 rear bumpers. Does NOT fit standard F30 3 Series or F32 4 Series bumpers.

Installation Details

  • Diffuser Fitment: Direct clip-in replacement for the OEM plastic lower valance using factory undershell screw locations.

  • Lighting Wiring: Includes an inline wiring harness. Taps directly into the factory rear inner tail light/brake light wiring (Ground, Running Light, Brake Light signal).

Frequently Asked Questions (FAQ)

Q: How does the F1 LED brake light wire into the car?

A: The included harness connects to your rear tail light wiring loom. It draws low power from the 12V system to illuminate with your running lights and brighten upon brake application.

Q: Will this fit with aftermarket exhausts?

A: Yes, the exhaust cutouts are enlarged to clear both stock M quad tips and larger aftermarket exhaust tips up to 102mm (4 inches).

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LED Shift Lights

Our LED Shift Lights offer the highest refresh rate in the market on top of our bright and adjustable display. This option is meant for customers looking for a performance spec steering wheel.

Paddle Shifter

We have a selection of paddle shifters that's catered towards your steering wheel. Enhance your shifting experience with our custom LED paddle shifters.

Heated Function

If your car comes with a heated steering wheel, you have the option to keep it with our custom wheels. For carbon trims, only the sides will be heated.

100% Fitment Guarantee

Perfect fit or your money back

Free Worldwide Shipping

On all orders, no minimum

1 Year Warranty

Full coverage on all products

Everything You Need to Know:

Our customer support is available Monday to Friday: 8am-10:30pm.
Average answer time: 1h
Many of our parts are direct replacements or plug-and-play upgrades, designed to fit OEM mounting points and connections. Some items, especially custom gauge clusters or aftermarket electronics, may require professional installation to ensure proper operation. Always follow the included instructions or consult a certified technician.
We ship from warehouses in the US and Europe to ensure fast regional delivery. Delivery times typically range from 1–7 business days, depending on location. All products come with a 12-month limited warranty covering manufacturing defects. Damage during installation or misuse is not covered.
Where applicable, our products include certifications such as CE, RoHS, RED, or other regional compliance marks. These demonstrate adherence to safety, environmental, and electromagnetic standards. Buyers should verify local laws and road-use regulations before installation, as regulations can vary by country.