


2018-2023 F90 M5 Dry Carbon Diffuser
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LAB Dry Carbon Fiber Rear Diffuser – BMW F90 M5 (2018–2023)
Restock Arrives Mid January - Pre-Order Today
🖤 Dominate the Streets. Own the Finish Line. 🖤
Elevate the aggression and performance of your BMW F90 M5 (2018–2023) with the Legendary Auto Builders Dry Carbon Fiber Rear Diffuser — a track-inspired masterpiece engineered for those who refuse to blend in. 💥
💎 Why Dry Carbon? Because Nothing Else Comes Close.
Crafted from true pre-preg dry carbon fiber, this diffuser is lightweight, razor-sharp in detail, and built using autoclave technology trusted by motorsport and aerospace industries.
✔️ 60% lighter than traditional wet carbon
✔️ Unmatched strength and heat resistance
✔️ Zero fading or yellowing over time
✔️ Crisp weave and flawless fitment
This isn’t just a part — it’s an upgrade in form, function, and finish.
🔥 Why This Diffuser Changes the Game:
✅ Aggressive Sculpted Design – Transforms the rear profile of your F90 with deeper fins and a more planted look
✅ Improved Aerodynamics – Channels air more efficiently, improving high-speed stability and downforce
✅ Precision Fitment – Test-fitted on multiple F90 M5s to guarantee OEM-level fitment — no trimming, no gaps, no excuses
✅ Glossy UV-Coated Finish – Showroom quality that holds up in real-world conditions
✅ Direct Bolt-On Install – No guesswork, just clean execution
🛠️ LAB Quality, Backed by Passion:
At Legendary Auto Builders, every part we create is driven by obsession — obsession with precision, performance, and perfection. We don’t mass-produce parts. We craft them. Every diffuser is inspected, test-mounted, and shipped with confidence.
You’re not just buying carbon — you’re buying legacy-level detail, made by car people for car people. 💪
✅ Fitment:
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BMW F90 M5
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Model Years: 2018, 2019, 2020, 2021, 2022,
🏁 Bottom Line:
Whether you’re pulling up at Cars & Coffee or gapping rivals on the freeway, the LAB Dry Carbon Fiber Diffuserbrings presence, purpose, and perfection to your M5. 💨
🔗 Don’t settle. Stand out. LAB is for those who build legendary.
#F90M5 #DryCarbon #BMWMPerformance #LABF90 #M5Diffuser #LegendaryAutoBuilders

2018-2023 F90 M5 Dry Carbon Diffuser
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.

