BMW M5 G90 G99 Catted High Flow Downpipes (Guaranteed No Check Engine Light)

Q: 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.

$850.00 $1,100.00

🇺🇸 4TH OF JULY: 20% OFF SITEWIDE - ENDS JULY 10 - USE CODE FREEDOM20

Product variants

Pickup available at LAB X Premium

Usually ready in 24 hours

In Stock • Ships in 1–2 Business Days (from California Warehouse)

Fast fulfillment + tracking on every order

2-Year Warranty Included

Covers manufacturing defects

Fitment Guaranteed

Verified compatibility for listed BMW models

Questions? Call (424) 483-1280

Talk to a real product expert

Pairs well with

BMW G90 M5 / G99 M5 Touring High-Flow Catted Downpipes

Guaranteed No Check Engine Light
Currently on Backorder — Estimated to Ship in Approximately 45 Days

Transform the performance of your BMW G90 M5 or G99 M5 Touring with the LAB High-Flow Catted Downpipes. Precision-engineered for the twin-turbo S68 platform, these downpipes maximize exhaust flow, reduce backpressure, and deliver substantial gains in horsepower, torque, and throttle response while maintaining OEM-level fitment.

Featuring premium high-flow catalytic converters, these downpipes are designed to provide exceptional performance without sacrificing drivability. Best of all, they are Guaranteed No Check Engine Light, eliminating the need for spacers, workarounds, or tuning simply to prevent fault codes.

Whether you're looking for faster turbo spool, a more exotic exhaust note, or increased performance, the LAB High-Flow Catted Downpipes are built to exceed expectations.

Guaranteed No Check Engine Light

Unlike many aftermarket downpipes, the LAB High-Flow Catted Downpipes are specifically engineered to operate without triggering a Check Engine Light.

Guaranteed No Check Engine Light
No O2 sensor spacers required
OEM-style integration
Designed for long-term reliability and consistent performance

Performance Benefits

Guaranteed No Check Engine Light
Faster turbo spool with reduced turbo lag
Increased horsepower and torque
Sharper throttle response
Reduced exhaust backpressure for maximum efficiency
Deeper, more aggressive exhaust tone
Significant performance gains when paired with ECU tuning

Premium Construction

Every set is manufactured from premium-grade stainless steel using precision manufacturing techniques to ensure exceptional durability, precise fitment, and long-term reliability.

Features include:

Premium high-flow metallic catalytic converters
Guaranteed No Check Engine Light
Precision CNC-machined flanges
Mandrel-bent stainless steel tubing
Reinforced flex sections to reduce vibration and drivetrain stress
Precision TIG-welded construction
OEM-style fitment utilizing factory mounting locations
Designed to withstand extreme heat and high-performance driving

Sound

Replacing the restrictive factory downpipes allows the S68 to breathe more efficiently, producing a noticeably deeper, louder, and more exotic exhaust note while improving turbocharger acoustics and overall engine character.

Fitment

2025+ BMW G90 M5

2025+ BMW G99 M5 Touring

Engine: 4.4L Twin-Turbo S68 V8

Professional Installation Recommended

Professional installation is recommended. Pair with the LAB Catback Exhaust System and LAB Valve Controller for the ultimate combination of performance, sound, and driving experience.

Track Use & Emissions Notice

These downpipes are intended for off-road and closed-course competition use only and are not CARB certified. Orders cannot be shipped to California residential addresses unless they are being delivered directly to a licensed performance installation facility. Please contact us if you have any questions regarding compliance or shipping requirements.

BMW M5 G90 G99 Catted High Flow Downpipes (Guaranteed No Check Engine Light)

Primary

$850.00 $1,100.00

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.

Easy Monthly Payments

Split your total into flexible installments

Affirm Financing Available

0% interest options may be available*

*Payment plans shown at checkout. Subject to eligibility and approval.

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.