Performance V2 Carbon Fiber Rear Diffuser Extensions - G80 M3 | G82 / G83 M4

$807.00
/
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Sharpen the rear profile of your G8X M3 or M4 with Performance V1 prepreg carbon fiber rear diffuser extensions. Designed for sedan, coupe, and convertible models, these extensions enhance the factory diffuser with a longer, more aggressive profile while maintaining a clean OEM plus appearance.

Constructed from 100 percent genuine prepreg carbon fiber and cured in an autoclave, these extensions offer a lightweight yet rigid structure with consistent weave quality and a refined matte finish. Compared to traditional wet carbon, prepreg construction provides improved strength, reduced weight, and a more uniform surface with minimal resin variation.

Installation is straightforward and does not require cutting, drilling, or adhesive. The factory diffuser extensions are removed and replaced directly with the prepreg carbon pieces, reusing all OEM mounting points and hardware for proper fitment. Each set includes both driver and passenger side extensions designed to follow the factory bumper contours closely.

Professional installation is recommended to ensure optimal alignment and long term durability.

FITMENT (Please be sure to select your model below!)

- G80 M3

- G82 / G83 M4

ABOUT US

OUR GOAL

Horizon Motorsport has one goal: to make our clients happy. We aim to provide the highest level of customer service and the highest caliber parts, all at the most competitive prices. Have a question or concern about a product we sell? Send us an email at sales@horizonmotorsport.com.

SHIPPING

Orders typically ship in 1-2 business days from our location in Los Angeles, CA. Transit time usually ranges from 3-5 business days, depending on where you are located. We offer worldwide shipping, if you need live outside of North America, shoot us an email and we would be happy to give you a quote!

Contact Us
Creating life-long customers.

As a small business, we take pride in building long lasting relationships with our customers who know they can rely on us for their BMW needs. At Horizon Motorsport, our mission is to provide a consistently positive and transparent customer experience, from product selection to delivery and support, so our customers feel confident choosing us time and time again.

Enthusiast Owned

Horizon Motorsport was founded in 2019 in Los Angeles, California by fellow BMW enthusiasts. With hands on experience across a wide range of BMW platforms, we have been actively involved in the Southern California BMW community for years. Our close connection to the local scene, combined with experience working with other high end European focused brands, allows us to carefully select and stock parts that meet our standards for quality, fitment, and overall performance.

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