G8X M3 | M4 F1 Rear Dry Carbon Diffuser w/ Light
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G8X M3 | M4 F1 Style Dry Carbon Rear Diffuser w/ Integrated Light
Pre-Preg Dry Carbon Fiber | Motorsport-Inspired Design
📦 Stocked & Ships from Southern California in 1–2 Business Days
ENGINEERED FOR PERFORMANCE. BUILT FOR PRECISION.
Upgrade the rear profile of your BMW G8X M3 or M4 with the LAB F1 Style Dry Carbon Rear Diffuser with Integrated Light — a race-inspired upgrade designed to elevate both aesthetics and aerodynamic performance.
Manufactured from true pre-preg dry carbon fiber and autoclave-cured, this diffuser delivers unmatched strength, consistency, and OEM-grade fitment. Unlike mass-produced wet-carbon alternatives, LAB dry carbon ensures perfect weave alignment, deep gloss clarity, and structural integrity you can trust at high speeds.
WHY PRE-PREG DRY CARBON FIBER MATTERS
OEM-Matched Weave & Gloss Finish
Designed to seamlessly match factory BMW carbon fiber components.
Lightweight & Exceptionally Strong
Up to 60% lighter than fiberglass or wet carbon while maintaining superior rigidity.
Autoclave-Cured Construction
Precision resin control results in zero excess weight and a flawless surface finish.
UV-Resistant High-Gloss Clear Coat
Protects against fading, yellowing, and sun damage over time.
OEM-GRADE FITMENT — NO COMPROMISES
Each diffuser is CNC-trimmed and test-fitted to ensure precise alignment with factory mounting points. Unlike wet-carbon diffusers that commonly warp or sit unevenly, the LAB F1 Style diffuser installs flush, secure, and rattle-free.
Install with confidence knowing your diffuser will not gap, vibrate, or detach under aggressive driving conditions.
F1-STYLE DESIGN WITH INTEGRATED REAR LIGHT
Inspired directly by Formula 1 rear aerodynamics, the LAB F1 Style diffuser features a clean, motorsport-correct layout that enhances rear airflow while delivering an unmistakable race-ready look.
The integrated F1-style rear light completes the design, adding a functional motorsport detail that transforms the rear of your G8X into a true track-inspired statement.
KEY FEATURES
✅ 100% Pre-Preg Dry Carbon Fiber Construction
✅ Integrated F1-Style Rear Light
✅ UV-Resistant High-Gloss Clear Coat
✅ F1-Inspired Aerodynamic Design
✅ Precision OEM-Grade Fitment
✅ Lightweight, Rigid & Built for High-Speed Use
VEHICLE APPLICATION
✔ BMW G80 M3 Sedan (2021+)
✔ BMW G82 / G83 M4 Coupe & Convertible (2021+)
WHY CHOOSE LEGENDARY AUTO BUILDERS
At Legendary Auto Builders, every carbon fiber component is California-stocked, test-fitted, and quality-verifiedbefore shipping. When you order from LAB, you’re investing in OEM-level craftsmanship, fast U.S. fulfillment, and enthusiast-driven support.
Legends aren’t born — they’re built. 🏁
G8X M3 | M4 F1 Rear Dry Carbon Diffuser w/ Light
We’ve got you.
Whether it’s fitment questions, order updates, or install guidance, our team’s here to make sure you get the right parts, the first time. Fast replies, real support, no runaround.
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Shipping Information
We ship fast and nationwide. Most in-stock items leave our SoCal warehouse within 1–3 business days. You'll get tracking as soon as it’s on the way. Need it quicker? Expedited options are available at checkout.
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Customer Support
Questions about your order? Our support team is here to help every step of the way. Reach us by email or DM.
Fast responses, real solutions, no bots.
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Contact Us
Whether it’s about your order, install guidance, or wholesale inquiries, don’t hesitate to reach out.
📞 Phone: +1 (949) 371-5212
📧 Email: orders@legendaryautobuilders.com
📍 Visit Us: 21087 Commerce Pointe Drive, Walnut, CA 91789We’ll always do our best to get back to you quickly and take care of you the right way.
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FAQs
Do you offer financing or payment plans?
Yes. At checkout, you can use Shop Pay Installments or Affirm to split your purchase into easy monthly payments. Financing options, including potential 0% interest plans, are shown during checkout and are subject to approval.
Will this part fit my BMW?
Yes. Every product we sell is verified for specific BMW models and chassis. If you want extra peace of mind, you can send us your model, year, or VIN and our team will personally confirm fitment before you order. BMW fitment accuracy is a priority at Legendary Auto Builders.
Are your parts OEM-quality or aftermarket replicas?
We only carry high-quality aftermarket parts that meet or exceed OEM standards. Each product page clearly outlines materials, construction, and finish so you know exactly what you’re getting. We do not sell low-grade replicas or poorly made components.
Where do you ship from and how long does shipping take?
Most in-stock orders ship from our California warehouse within 1–2 business days. Standard U.S. delivery typically takes 3–7 business days depending on location. Made-to-order or specialty items may require additional production time, which is always noted on the product page.
Can I install this myself, or do I need a professional?
Many of our products are designed for direct bolt-on installation and can be installed at home with basic tools. For more complex parts—such as aero components or performance upgrades—we recommend professional installation for best results. If you have questions about install difficulty, just reach out.
What happens if the part doesn’t fit my vehicle?
If there’s a fitment issue due to an error on our end, we’ll make it right. Our team will help resolve the issue quickly, whether that means an exchange or another solution. Fitment accuracy matters to us, and we stand behind the products we sell.
Are your products tested for quality and durability?
Yes. All products go through quality checks and are sourced from trusted manufacturers. We work closely with suppliers and installers to ensure every part meets our performance and durability standards before it ever reaches your car.
Do your products come with a warranty?
Most items include a warranty covering manufacturing defects. Warranty length and coverage details vary by product and are listed on the product page. If you ever have a concern, our support team is here to help.