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

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

Looking to transform the sound of your G8X?

The factory midpipe is restrictive and muted — but a resonated single midpipe completely changes the character of the S58.

The MAD Resonated Single Midpipe replaces the OEM dual midpipe with a free-flowing 3.5” single design, engineered to improve exhaust flow while delivering a deeper, more refined exhaust tone.

Deep.
Bassy.
Zero rasp.

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Why this Midpipe

If you’ve been following my build, you’ve already heard this setup.

This is the exact midpipe responsible for the deep, boomy tone in my YouTube videos.

Unlike non-resonated setups that introduce rasp and harshness, the integrated resonator smooths out the exhaust note while still allowing the car to sound aggressive and full.

Constructed from 304 stainless steel with smooth mandrel bends, this midpipe reduces backpressure and improves overall exhaust flow.

OEM compatibility.
Refined sound profile.
Designed to bring out the best in the S58.

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Installation Overview

• Can be paired 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
• Integrated Resonator for Reduced Rasp
• Mandrel Bent for Maximum Flow
• Upgraded Clearance Brace with MAD Logo

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What's Included

• MAD 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

Not all midpipes sound the same — and this one proves it.

This setup delivers a deep, boomy tone without the harshness that ruins most S58 exhaust setups.

It’s the exact configuration I ran on my M4 in my YouTube videos — and the sound speaks for itself.