Carbon Fiber Rear Diffuser W/ Fins - E9x M3
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Fitment Guaranteed
Dry Carbon Fiber with 2x2 Weave
UV Protectant Clear Coat
24/7 Customer Support
Manufacturer's Warranty
Transform the rear end of your BMW E9x M3 with our Carbon Fiber Rear Diffuser with Fins. Designed for those who demand both style and performance, this high-quality diffuser not only enhances the appearance of your M3 but also improves rear downforce and airflow efficiency. Featuring an aggressive fin design, it reduces drag and boosts stability at high speeds, giving your M3 the perfect track-ready aesthetic.
Key Features:
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Aerodynamic Excellence – The diffuser’s strategically placed fins and design enhance rear-end downforce, improving high-speed stability and handling.
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Premium Carbon Fiber Construction – Made from 2x2 twill weave carbon fiber, offering the perfect balance of light weight, durability, and structural strength.
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Enhanced Styling – Aggressive, race-inspired fins give the M3 a more dynamic and refined rear profile, perfect for car enthusiasts and motorsport fans.
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OEM Fitment – Tailored to fit the BMW E90 M3 Sedan, E92 M3 Coupe, and E93 M3 Convertible with a precise, flush fitment and no need for additional modifications.
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UV-Resistant Clear Coat – Finished with a high-gloss or matte UV-protected coating that maintains its appearance and prevents fading, yellowing, or cracking over time.
Vehicle Compatibility:
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BMW E90 M3 Sedan (2008–2011)
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BMW E92 M3 Coupe (2008–2013)
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BMW E93 M3 Convertible (2008–2013)
Installation Details:
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Direct bolt-on installation with easy mounting using factory points.
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Comes with all necessary hardware for secure and easy installation.
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Professional installation recommended for optimal results, ensuring proper fitment and alignment.
Why Choose the Carbon Fiber Rear Diffuser with Fins?
✅ Improved Aerodynamics – Increases rear downforce for better stability and handling, especially at high speeds or on the track.
✅ Race-Inspired Fins – Aggressive fin design adds a motorsport aesthetic to your M3 while improving air management.
✅ Lightweight Durability – Crafted from high-strength carbon fiber, reducing weight while maintaining rigidity and durability.
✅ OEM+ Fitment – Designed to fit seamlessly with your E9x M3’s rear bumper without any cutting or modifications.
Upgrade Your M3’s Rear End
The Carbon Fiber Rear Diffuser with Fins is the perfect upgrade for drivers looking to add a racing edge to their BMW E9x M3 while optimizing its aerodynamics. Whether you're hitting the track or showing off your car, this diffuser ensures your M3 not only performs at its best but looks outstanding from every angle.
Key Information for All Our Products
Carbon Weave: Each of our products features our superior-quality 2x2 carbon weave as standard. We strive to cater to the diverse preferences of our customers, hence we also offer alternate options like matte carbon, forged carbon, and 1x1 carbon upon request. You can make such requests via our "Custom Product Inquiry Section".
Durability & Protection: Our products are designed not only to enhance aesthetics but also to stand the test of time. We use the highest grade UV protection available for all our products to shield them from sun damage and minor road debris. This ensures the longevity of our products, keeping them looking their best for longer.
Warranty: We stand behind the quality of our products, offering a 30-day standard warranty for all items. This covers any issues with fitment or initial damages. Please be aware, however, that we are unable to extend this warranty to cover damages that occur post-installation.
Our Mission
Why Us?
At our company, we pride ourselves on producing exceptional quality products by designing our own unique molds. This gives us the ability to uphold the highest standards of quality control throughout the production process. Ensuring customer satisfaction is at the heart of what we do, and we promise to provide responsive, dedicated service at every step.
In our pursuit of excellence, we use only top-tier materials for our products, because we understand the importance of quality and durability for your vehicles. As passionate car enthusiasts ourselves, we adhere to a fundamental principle - we won't sell anything that we wouldn't confidently use on our own personal vehicles. Rest assured, when you choose our products, you're choosing the best for your vehicle.
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Carbon Tailored For Your Pride and joy
Our products are crafted with precision, performance, and passion, delivering lightweight strength and a bold, motorsport-inspired aesthetic. From front lips to hoods, and diffusers, each component is designed to enhance your cars appearance, improve aerodynamics, and reflect true automotive excellence.
Why Dry Carbon Fiber ?
Dry carbon fiber is the gold standard in automotive performance parts—and the reason Cvrbonized chooses it for our premium upgrades. Unlike traditional wet carbon, dry carbon is made using a high-pressure, vacuum-sealed process that delivers unmatched strength, lighter weight, and a flawless finish.
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Frequently Asked Questions
We specialize in premium dry carbon fiber performance parts and accessories for BMW models, especially the G80 M3, G82/G83 M4, and other performance platforms. Our collection includes front lips, air vents, emblems, interior trims, diffusers, and more.
Yes. All our products are made from 100% real dry carbon fiber, offering lightweight construction, superior strength, and a high-quality finish compared to wet carbon alternatives.
Absolutely. Each part is engineered with OEM-grade fitment, ensuring seamless installation without cutting or modifications in most cases. If any product requires special installation steps, we note it clearly on the product page.
Yes! Cvrbonized ships worldwide. Shipping fees and delivery times vary depending on your region.
Yes. All carbon fiber parts come with a manufacturer warranty against defects in materials or workmanship. Warranty does not cover damage caused by improper installation or accidents.
WHY ENTHUSIASTS TRUST CVRBONIZED
Cvrbonized delivers premium, precision-engineered carbon fiber parts built to elevate your cars’s performance and style. We’re not just a store—we’re part of the culture.
Perfect Fit, Every Time
Designed and tested to match your car with true OEM-level accuracy.
Premium Carbon. No Compromises.
Only high-grade dry carbon fiber and performance-tested materials make the cut.
Expert Support You Can Count On
Our team provides dedicated, enthusiast-level guidance from start to finish.
Carbon Fiber Upgrades For Road Presence
Are You Craving to Stand Out from the rest? Look no further. We offer a wide range of high-quality carbon fiber parts to help with your car's aesthetics or provide functional weight reduction.