MAD G8X S58 Resonated Downpipes – BMW M3 / M4 (G80/G82) + M2 (G87)

In Stock: Ships in 1-2 business days
Available to Order: Ships in 3-4 Weeks

Looking for maximum S58 performance without the excessive rasp?

Traditional high-flow downpipes unlock airflow, power, and volume from the S58 — but they can also introduce a sharper, raspier exhaust note depending on the rest of your setup.

The MAD S58 Resonated MaxFlow Downpipes are designed to maximize exhaust flow while using integrated resonators to help smooth out the exhaust note and reduce unwanted rasp.

More flow.
Less rasp.
A more refined S58 sound.

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Why these Downpipes

The integrated resonators are what separate these downpipes from a traditional MaxFlow setup.

By removing the restrictive factory catalytic converters, the S58 can breathe more freely, helping improve turbo spool, throttle response, and overall performance on tuned vehicles. The resonated design then helps control the harsher frequencies that can come with increased exhaust flow.

The integrated flex sections also help reduce stress and unwanted vibration throughout the turbocharger and exhaust system while allowing for proper movement during operation.

Maximum airflow.
Resonated refinement.
Built for a cleaner exhaust note.

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Installation Overview

• Direct bolt-on replacement for factory downpipes
• Compatible with OEM and aftermarket exhaust systems
• Integrated flex sections for reduced stress and vibration
• Professional installation recommended

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Fitment

BMW S58 Platform:

• G80 M3
• G81 M3 Touring
• G82 M4
• G83 M4 Convertible
• G87 M2

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Construction

• Resonated MaxFlow Design
• 304 Stainless Steel Construction
• Integrated Resonators for Rasp Reduction
• Integrated Flex Sections for Reduced Stress
• High-Flow Design
• Smooth Mandrel Bends
• Corrosion and High-Temperature Resistant Construction

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What's Included

• MAD S58 Resonated MaxFlow Downpipes
• Required Installation Hardware

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Warranty & Returns

• Eligible for a 90-day return window if unused, uninstalled, and in original condition
• Backed by a lifetime warranty on defects and fitment

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Important Notes

• Intended for off-road / motorsport use only
• Not legal for use on public roads, highways, or emissions-controlled vehicles

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Automaz Approved

If you want to unlock the airflow, performance, and volume of a MaxFlow downpipe setup but prefer a smoother, more refined exhaust note, the MAD Resonated MaxFlow Downpipes deliver the best of both worlds.

You get increased airflow, improved turbo response, and a more aggressive S58 character — while the integrated resonators help reduce unwanted rasp and clean up the overall exhaust note.

An excellent choice for builds where sound quality matters just as much as performance.

Emissions Disclaimer:

This product is not legal for sale or use on pollution-controlled vehicles operated on public roads, highways, or streets. It is intended for off-road, race, or closed-course competition use only, where such modifications are permitted.

By purchasing this product, you acknowledge and agree that:

• You are responsible for compliance with all applicable emissions laws and regulations.

• MAD, Automaz Collective, and its affiliates disclaim any liability for improper or unlawful use of this product.

• Use of this part on public roads may violate the Federal Clean Air Act (42 U.S.C. § 7522) and similar state laws.

Please check your local laws before purchase and installation.