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MAD

MAD BMW S58 Resonated H-Pipe Midpipe for G80 M3 & G82/G83 M4

SKU: MAD-125
Regular price $739.00
Regular price Sale price $739.00
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Overview


Wake up your S58 with a deeper, smoother exhaust note. The MAD Resonated H-Pipe Midpipe is designed for the BMW G80 M3 and G82/G83 M4 to unlock sound and flow without overwhelming volume or drone. By replacing the factory midsection with a free-flowing H-pipe and dual resonators, this system refines the tone, reduces rasp, and helps the turbos breathe more efficiently.

Key Features

  • Resonated H-Pipe Design — Balances exhaust pulses between banks for a richer, more classic M-car tone.
  • High-Flow Midpipe — Less restrictive than stock to support higher power levels and improved turbo response.
  • 304 Stainless Steel Construction — Corrosion-resistant tubing and welds built to handle heat, track days, and daily driving.
  • Direct Bolt-On Fitment — Interfaces with factory downpipes and rear section using OEM-style connections.
  • Compatible with Stock or Aftermarket Rear Exhausts — Ideal foundation for future exhaust upgrades.

Sound & Performance Benefits

  • Deeper, fuller exhaust note with reduced metallic rasp.
  • Improved throttle response and turbo spool characteristics.
  • Retains streetable volume while enhancing character under load.
  • Weight savings compared to the bulky factory midpipe assembly.

Installation Notes

This midpipe is a bolt-on replacement that installs using basic hand tools and standard exhaust hardware. For best alignment and leak-free sealing, professional installation is recommended.

Usage Notice

Exhaust modifications may not be legal for use on public roads in all regions. Intended for off-road and motorsport use where permitted. Always confirm local regulations before installation.

Why Choose the MAD Resonated H-Pipe Midpipe

Engineered specifically for the S58 platform, MAD’s resonated H-pipe offers a carefully tuned balance of sound, flow, and quality. It delivers the tone enthusiasts want with the reliability and fitment expected from a dedicated BMW performance brand.

Vehicle Fitment


  • 2021–2025 BMW G80 M3 Sedan
  • 2021–2025 BMW G82 M4 Coupe
  • 2021–2025 BMW G83 M4 Convertible

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Frequently Asked Questions

Do you stock parts or drop ship?

We use a combination of direct ship and drop shipping to supply our customers with the best deals on the best parts. We only sell products we would install on our own vehicles. Majority of our inventory is stocked in Northern California for peace of mind and fast shipping.

How long does shipping take?

On every product we have listed the average time it takes for the item to ship from our facility or our partners. If the item is in stock in one of our USA Warehouses, orders generally ship out within 1-2 business days of when the order is placed.

What happens if my part arrives damaged?

If you receive a defective item please contact us immediately so we may start your replacement or refund process. You can email us at [email protected]

Do you Price Match?

We will gladly price match any competitive price from comparable competitors. Please email us [email protected] with a link to the competitor's listing for more information. We Do Not Price Match Ebay or Alibaba for obvious reasons.