G8X M2 M3 M4 - Hydroformed S58 Downpipes
Couldn't load pickup availability
Pickup available at LAB X Premium
Usually ready in 24 hoursPairs well with
LAB BMW G8X / G87 S58 Hydroformed Catless Downpipes
Stocked in California — Ships in 1–2 Business Days
The Next Generation of LAB S58 Downpipes
Introducing the all-new LAB Hydroformed S58 Catless Downpipes, engineered for the BMW G80 M3, G82/G83 M4, and G87 M2.
Rather than constructing the downpipe from multiple sections welded together, LAB utilizes hydroformed stainless steel construction to dramatically reduce the number of welds throughout the system. The result is a cleaner, stronger, and more refined downpipe built to handle the demands of high-performance S58 applications.
Every set is manufactured to LAB Secret Formula Standards with an emphasis on strength, exhaust flow, fitment, and exceptional fabrication quality.
Why Hydroformed?
Traditional downpipes can require numerous welded sections to create their final shape. Every additional weld introduces another joint into the system.
Our hydroformed construction allows complex bends and transitions to be formed with significantly fewer welded sections, creating a more continuous and robust structure.
The result:
- Fewer welds and potential failure points
- Stronger overall construction
- Cleaner internal transitions
- Excellent exhaust flow
- Beautiful, high-end appearance
- Built for demanding high-performance applications
LAB Secret Formula Welding Standards
The welds we do use are done right.
Each downpipe is back-purged with argon during welding, helping protect the inside of the stainless steel weld from oxidation and contamination.
The result is the type of fabrication we expect from a LAB product: clean, strong, consistent welds inside and out.
No shortcuts. No unnecessary welds. No generic mass-produced construction.
Performance Benefits
Removing the restrictive factory catalytic converters allows the S58 turbochargers to breathe significantly more freely.
Benefits include:
- Increased exhaust flow
- Reduced backpressure
- Faster turbo response
- Sharper throttle response
- Increased horsepower and torque potential
- Louder, more aggressive exhaust note
- Increased turbo sound and exhaust character
- Excellent supporting modification for tuned and high-horsepower S58 builds
Engineered the LAB Way
These aren’t generic downpipes with a LAB logo added to them.
From the hydroformed stainless construction to the reduced weld count, argon back-purged fabrication, fitment, and finishing, every detail follows our LAB Secret Formula Standards.
We wanted an S58 downpipe that looks as good on the fabrication table as it performs on the car.
Fitment
Fits:
- 2021+ BMW G80 M3
- 2021+ BMW G82 M4
- 2021+ BMW G83 M4 Convertible
- 2023+ BMW G87 M2
Engine: BMW S58
What’s Included
- LAB Hydroformed S58 Catless Downpipes — Pair
- Installation Hardware
Why buy cheap and do it twice?
Upgrade to the next generation of LAB S58 downpipes—hydroformed, back-purged, built stronger, and manufactured to LAB Secret Formula Standards.
Professional installation recommended.
⚠️ For off-road / motorsport use only. Catless downpipes may trigger a check-engine light and may not comply with emissions regulations. Check applicable local laws and regulations before purchase or installation.
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.
-
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.
-
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.
-
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.
Your Favorite Builds,
Our Parts
BUY NOW & PAY LATER
Split your purchase into easy payments at checkout. No hidden fees.
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.
- Choosing a selection results in a full page refresh.
- Opens in a new window.