
G90 G99 M5 MP Pre-Preg Carbon Diffuser
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Pickup available at LAB X Premium
Usually ready in 24 hoursPairs well with
G90 M5 / G99 M5 Touring OEM Style Rear Diffuser
OE Grade Pre-Preg Dry Carbon Fiber
OEM+ Styling. Premium Materials. Perfect Fitment.
Refine the rear of your BMW G90/G99 M5 with the LAB OEM Style Rear Diffuser. Designed to complement the factory body lines, this diffuser delivers a more aggressive and purposeful appearance while maintaining the clean OEM+ styling that BMW enthusiasts appreciate.
Manufactured from premium OE Grade Pre-Preg Dry Carbon Fiber, every diffuser is autoclave cured to achieve exceptional strength, lightweight construction, and a flawless OEM-quality finish. Unlike lower-quality wet carbon alternatives, our dry carbon construction provides superior weave consistency, durability, and long-term appearance.
Engineered for enthusiasts who refuse to compromise on quality, fitment, or design.
Features
- OE Grade Pre-Preg Dry Carbon Fiber Construction
- Autoclave Cured for Maximum Strength & Lightweight Performance
- OEM Style Design
- OEM Matching 2x2 Carbon Fiber Weave
- High Gloss UV-Resistant Clear Coat
- Precision Engineered for Excellent Fitment
- Direct Replacement for the Factory Diffuser
- Designed for G90/G99 M5 only
- Professional Installation Recommended
Why Choose OE Grade Pre-Preg Dry Carbon?
Not all carbon fiber is created equal.
Our OE Grade Pre-Preg Dry Carbon is manufactured using the same process found on many of the world’s highest-end performance vehicles.
Benefits Include:
- Significantly lighter than traditional wet carbon fiber
- Greater structural rigidity
- OEM-quality weave consistency
- Superior resistance to heat, UV exposure, and yellowing
- Cleaner finish with virtually no resin distortion
- Long-lasting durability built for daily driving and track use
This is the premium standard for carbon fiber manufacturing.
Precision Fitment
Every LAB diffuser is engineered using OEM mounting locations for an installation that looks and fits like it came from the factory.
No uneven gaps.
No excessive trimming.
No loose edges.
Just premium fitment worthy of your build.
Vehicle Fitment
BMW G90 M5 (2025+)
BMW G99 M5 Touring (2025+)
Shipping
Stocked in California
Ships in 1–2 Business Days
Please Note
- Professional installation is recommended.
- Carbon fiber parts are hand-finished, and slight variations in the weave or finish are considered normal characteristics of genuine carbon fiber.
- Always test fit components before final installation.
When it’s done by the LAB, it’s done premium.

G90 G99 M5 MP Pre-Preg 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.

FreshhKiicks Install
When it comes to proper builds, FreshhKiicks knows what is takes to stand out. That's why he chose to go with LAB parts for his LCI X3M.
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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.

