G90 M5 Catback Exhaust System w/ Valves
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LAB Valved Catback Exhaust System — BMW G90 M5 (2025+)
In Stock • Ships From California • Tested & Perfect Fitment
The G90 M5 is a performance benchmark — and it deserves an exhaust system engineered to match its presence and capability. The LAB Valved Catback gives the S68 the deep, raw, and authoritative tone it should have left the factory with, while keeping refinement and control right at your fingertips.
This system has been installed and test-fitted by our team, ensuring perfect alignment, factory-level fitment, and a seamless bolt-on installation. No cutting. No welding. No compromise.
🔥 Turn Quiet Luxury Into Controlled Aggression
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Deeper, Louder, More Commanding Sound
Replace the muted OEM tone with a fuller, sharper, race-inspired exhaust note — without unwanted drone. -
3.5” Full Exhaust System
Optimized for unrestricted flow, improved response, and maximum performance potential. -
OEM+ Style Fitment
Designed specifically around the G90 chassis — clean routing, proper clearances, and zero modification required. -
Premium Valve Control System
Quiet when you need it. Violent when you want it.
🎛 Smart Valve Logic — Your Volume, Your Rules
Control the valves using factory M controls or switch to our included valve controller for full manual override.
Note: The factory ECU does not fully open valves under low RPM or Park. Our controller ensures 100% valve actuation for maximum sound on command.
🚀 Engineered for Enthusiasts Who Expect More
The LAB G90 M5 Valved Catback isn’t just a louder version of stock — it’s a full transformation of tone, character, and emotion behind the wheel. Every downshift pops. Every pull feels intentional. Every cold start sets a tone.
This is how the G90 M5 should sound.
⚠️ Professional installation recommended.
G90 M5 Catback Exhaust System w/ Valves
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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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.