Add subtle aggression to your rear fascia with these Carbon Fiber Rear Bumper Extensions, designed to trace the factory bumper contours for a clean, OEM+ look. Crafted from genuine 2×2 twill carbon fiber and finished with a UV-resistant high-gloss clear coat, they enhance visual width while maintaining seamless integration.

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Key Features

• Full replacement-style rear extensions, driver and passenger side

• Made from real carbon fiber with a 2×2 twill weave pattern

• UV-resistant high-gloss clear coat for lasting clarity

• Precision molded for direct fitment; drilling required for installation

• Lightweight yet rigid—designed to match factory lines perfectly

• Matte or forged carbon finish options available upon request

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Compatible Models

• BMW F80 M3 Sedan (2014–2018)

• BMW F82 M4 Coupe (2015–2020)

• BMW F83 M4 Convertible (2015–2020)

Engineered specifically for F8X rear bumpers. Not compatible with non-M models or later-generation chassis (e.g., G8X).

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What’s Included

• (2) Carbon Fiber Rear Bumper Extensions (Left + Right)

• Installation hardware not included on most products

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Why Buy From Eterna Motorworks

Eterna Motorworks is the standard in premium aftermarket automotive parts and services. With over a decade of hands-on experience, we’ve earned the trust of enthusiasts and professional builders worldwide by delivering unmatched quality, precision fitment, and long-term credibility. Every product we offer meets the highest standards in styling, performance, and reliability—on the street and on the track.

If you’re building with precision and intent—welcome to the team.

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Professional installation is highly recommended.

Installation hardware not included on most products.

For full fitment, installation, and store policy details, please refer to our policies before purchasing.

Worldwide shipping available upon request.

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Your next mod starts here. Upgrade the build the right way with Eterna Motorworks.