MAD BMW G8x M3 M4 S58 Non-Resonated Single Midpipe (Brace Included)

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

Looking to make your G8X sound as aggressive as it should?

The factory midpipe holds the S58 back — but a non-resonated single midpipe unlocks the raw, unfiltered character of the engine.

The MAD Non-Resonated Single Midpipe replaces the OEM dual midpipe with a free-flowing 3.5” single design, engineered for sound and performance.

Loud.
Raw.
Unfiltered.

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Why this Midpipe

I personally did the resonated version on my car — but we installed the non-resonated version on my friend’s build because he wanted a louder, more aggressive setup.

And it delivers.

Compared to the resonated version, this setup is noticeably louder and brings out more of the S58’s raw character. You’ll hear more volume, more edge, and a sharper tone throughout the rev range.

Constructed from 304 stainless steel with smooth mandrel bends, this midpipe reduces backpressure and improves exhaust flow while maximizing sound output.

Maximum volume.
Built for those who want to be heard.

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Installation Overview

• Compatible with OEM axleback.
• Includes upgraded exhaust brace for proper clearance
• Professional installation recommended

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Fitment

BMW G8X Platform:

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

Compatible with factory rear exhaust and most aftermarket axle-back systems.

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Construction

• 304 Stainless Steel
• 3.5” Single Midpipe Design
• Non-Resonated for Maximum Sound
• Mandrel Bent for Maximum Flow
• Upgraded Clearance Brace with MAD Logo

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What's Included

• MAD Non-Resonated Single Midpipe
• Exhaust Brace
• Required 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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Automaz Approved

If you want volume — this is the one.

The non-resonated setup brings out a louder, more aggressive version of the S58 with a raw edge that you simply don’t get from the factory.

We chose this setup on a friend’s build specifically for that reason — and it completely changed the presence of the car.