The BMW G90 and G99 M5 introduce a new era of M performance with the twin-turbocharged S68 V8, delivering immense power and everyday usability in equal measure.

While the drivetrain is nothing short of impressive, many enthusiasts agree on one thing—the factory exhaust leaves far too much of the V8's personality hidden.

Fortunately, you don't need a complete exhaust overhaul to change that.

The MAD H-Pipe Midpipe lineup gives G90 and G99 M5 owners two distinct ways to transform the sound of the S68, allowing you to choose the exhaust character that best matches your driving style.

Whether you prefer the raw, unmistakable rumble of a traditional H-pipe or a more refined version with integrated resonators, MAD has engineered a solution that lets the S68 finally sound like the V8 it is.

Why Upgrade the Factory Midpipe?

Modern performance cars are subject to increasingly strict noise regulations, and the factory midpipe plays a major role in keeping the G90 M5 exceptionally quiet.

While great for compliance, it also suppresses much of the engine's natural character.

Replacing the factory midpipe allows both exhaust banks to communicate through an H-pipe crossover, producing the deep, muscular tone enthusiasts expect from a cross-plane twin-turbo V8.

The result is:

• Richer exhaust character
• Stronger low-frequency rumble
• Fuller sound during acceleration
• Improved overall exhaust presence
• Virtually no highway drone

It's one of the most noticeable sound upgrades available without replacing the entire exhaust system.

The Standard H-Pipe: Maximum Character

For drivers who want the most authentic V8 experience, the MAD H-Pipe Midpipe delivers exactly that.

By preserving the factory dual-exhaust layout while introducing a precision-engineered H-pipe crossover, it creates a deeper and more aggressive soundtrack without adding unwanted rasp.

Highlights include:

• Classic American-style V8 rumble
• Increased low-end exhaust presence
• Fuller acceleration sound
• Smooth tone throughout the rev range
• Excellent compatibility with both factory and MAD axle-back systems

If your goal is to hear more of the S68 every time you touch the throttle, this is the more aggressive option.

The Resonated H-Pipe: Performance with Extra Refinement

Not every enthusiast wants maximum volume.

For owners who daily drive their G90 or G99 M5, the MAD Resonated H-Pipe offers a more sophisticated approach.

Integrated high-flow resonators smooth unwanted frequencies while preserving the deeper tone created by the H-pipe design.

The result is:

• Deeper exhaust note than stock
• Cleaner, smoother sound
• Reduced cabin resonance
• Virtually zero highway drone
• Aggressive under acceleration
• Comfortable for long-distance driving

It's an ideal solution for owners seeking a premium OEM+ exhaust experience rather than maximum volume.

Built for the Modern M Platform

Both midpipe options are manufactured from premium T304 stainless steel for exceptional durability and corrosion resistance.

Features shared across both systems include:

• Precision-engineered H-pipe crossover
• T304 stainless steel construction
• Direct compatibility with the MAD axle-back system
• Compatible with the factory axle-back (cutting required)
• Excellent fitment for the G90 and G99 chassis
• No tuning required after installation

The focus is simple: improve sound while maintaining factory-like fit and reliability.

Which One Is Right for You?

Choosing between the two systems comes down to personal preference.

Choose the MAD H-Pipe Midpipe if you want:

• The most pronounced V8 rumble
• A louder, more aggressive exhaust
• Maximum exhaust character
• A classic H-pipe sound profile

Choose the MAD Resonated H-Pipe Midpipe if you want:

• A deeper but more refined tone
• Reduced cabin resonance
• Daily-driving comfort
• Premium sound quality without excessive volume

Whichever route you choose, both systems dramatically improve the muted factory exhaust while preserving the unmistakable character of BMW's twin-turbocharged S68.

Designed Specifically for the G90 & G99 M5

Both systems are engineered exclusively for:

• BMW G90 M5
• BMW G99 M5 Touring

Vehicle-specific development ensures precise fitment and seamless integration with compatible factory and aftermarket exhaust components.

Available Now at XPH

If you've been waiting for an exhaust upgrade that finally lets the S68 sound like the performance V8 it was always meant to be, the MAD H-Pipe Midpipe lineup delivers exactly that.

Whether you prefer the bold personality of the standard H-pipe or the polished refinement of the resonated version, both options unlock a richer, fuller soundtrack while maintaining the drivability expected from a modern BMW M car.

Shop the MAD H-Pipe Midpipe and MAD Resonated H-Pipe Midpipe for the BMW G90 and G99 M5 today at XPH.

Standard H-Pipe: https://mad-us.com/mad-bmw-g90-m5-h-pipe-midpipe/ 

Resonated H-Pipe: https://mad-us.com/mad-bmw-g90-m5-h-pipe-midpipe-resonated/