Skip to product information
1 of 3

Carbon Fiber Rear Bumper Diffuser for BMW 3 Series E46 M3 Coupe Convertible 2-Door

Carbon Fiber Rear Bumper Diffuser for BMW 3 Series E46 M3 Coupe Convertible 2-Door

Regular price $399
Sale price $399 Regular price $599
Shipping calculated at checkout.

Premium Quality Carbon Fiber


0% Easy Financing Available


100% Fitment Guarantee

Upgrade the rear aesthetic of your BMW 3 Series E46 M3 Coupe or Convertible with this Carbon Fiber Rear Bumper Diffuser. Crafted from high-quality carbon fiber materials, this diffuser offers a perfect blend of style and functionality. Its aggressive design enhances the sporty appeal of your vehicle while improving aerodynamics. With its precise fitment and durable construction, this diffuser is an excellent choice for enthusiasts seeking to enhance the appearance of their E46 M3.


Key Features:
  • Enhanced Style: The Carbon Fiber Rear Bumper Diffuser features a sleek and aggressive design that adds a touch of motorsport-inspired flair to your BMW 3 Series E46 M3. Its distinctive appearance enhances the rear aesthetic of your vehicle, making it stand out from the crowd.
  • Premium Carbon Fiber Construction: Constructed from high-quality carbon fiber materials, this diffuser is lightweight yet durable. The 3X3 twill weave pattern and clear coating provide a glossy finish that complements the vehicle's exterior while offering protection against UV rays and environmental elements.
  • Perfect Fitment: Designed specifically for the BMW 3 Series E46 M3 Coupe and Convertible models, this diffuser offers a precise fitment without any modifications required.
  • It seamlessly integrates with the vehicle's bumper, ensuring a seamless and factory-like appearance.
  • Easy Installation: The diffuser is designed for replacement-style installation, and professional installation is highly recommended for optimal fit and finish. The package includes all necessary hardware and instructions for a straightforward installation process.
  • Superior Craftsmanship: Utilizing advanced 3D design and CNC molding techniques, this diffuser undergoes rigorous testing to ensure fitment and quality standards are met. Each unit is meticulously crafted to deliver consistent and reliable performance. Shockproof Packaging: To ensure safe transit, the diffuser is carefully packaged in a multilayer protected export carton, providing maximum protection against shocks and impacts during shipping.

BMW 3 Series E46 M3 Coupe Convertible 2-Door

Year: 2005-2012

Product Category: Rear Bumper Diffuser


Replacement style, professional installation is highly recommended

Surface Finish: Clear 3X3 twill weave carbon fiber, double layered UV-protected clear coating


3D design, CNC molding, test installation on real cars, fitment 100% guaranteed

Packing: Multilayer protected export carton, shockproof & crashproof

View full details

Customer Reviews

Based on 1 review
Sophia Davis

Investing in Carbon Velocity's carbon parts is worth every single penny! The quality is outstanding, surpassing even the most expensive competitors. From the moment I installed them, I knew I had made the right choice. Trust me, you won't regret choosing Carbon Velocity for your upgrades!

Satisfaction Guaranteed


What is carbon fiber, and why is it used in automotive modifications?

Carbon fiber is a lightweight and exceptionally strong material composed of carbon atoms in a pattern that creates long, interwoven fibers. In automotive modifications, carbon fiber is prized for its high strength-to-weight ratio, making it ideal for enhancing performance and aesthetics without adding excessive weight. It's used in various components like hoods, spoilers, mirror covers, and interior trims to improve aerodynamics and elevate the overall appearance of BMW cars.

Are carbon fiber modifications compatible with all BMW models? offers a wide range of carbon fiber mods and aftermarket accessories specially designed to fit various BMW models. However, due to differences in model years and configurations, not all parts may be compatible with every BMW car. We provide detailed product descriptions and compatibility information on our website to help you find the perfect carbon fiber components for your specific BMW model.

How do carbon fiber modifications benefit my BMW car's performance?

Carbon fiber modifications can significantly enhance your BMW's performance in several ways. The lightweight nature of carbon fiber reduces the overall vehicle weight, leading to improved acceleration, braking, and handling. Additionally, aerodynamic carbon fiber components, such as splitters and diffusers, can increase downforce, enhancing stability at high speeds and around corners. Experience the thrill of improved driving dynamics and a more exhilarating ride with our carbon fiber mods.

What sets carbon fiber products apart from others on the market?

At, we take pride in offering premium-grade carbon fiber mods and aftermarket accessories that are specifically engineered for BMW cars. Our products stand out for their exceptional craftsmanship, precise fitment, and attention to detail. We source materials from reputable suppliers, ensuring the highest quality carbon fiber components available. Moreover, our team of automotive enthusiasts is dedicated to providing excellent customer service, making your shopping experience with us second to none.