MAD BMW M340 M440 Axleback Exhaust (G20 & G22)

The MAD BMW M340i M440i Axleback Exhaust System is engineered for drivers seeking a bold, aggressive sound without unnecessary modifications or added cost. On the G20/G22 platform, a full catback exhaust is not required because the factory midpipe is single-piece, non-restrictive, and free of cats and resonators. Replacing it offers no real performance or sound gain, making the axleback the smart focus for upgrade.

This system enhances your vehicle’s sound character while retaining the factory midpipe. You’ll enjoy a deeper, more aggressive tone when accelerating, yet it remains refined and comfortable during regular driving.

The exhaust comes with three tip options: brushed stainless, black, or carbon, allowing you to customize the look to your build.

Installation is simple and quick. Cutting the factory pipe is required, but the process is straightforward, and the included clamps ensure a clean, secure fit.

Constructed from high-quality 304L stainless steel, this axleback provides excellent durability and corrosion resistance for long-term performance.

The system includes an upgraded dual valve setup that converts the factory single valve into a true M-style dual valve configuration. The factory valve actuator is reused, and an additional valve is added on the opposite side. This allows your exhaust to function seamlessly with OEM drive modes—quiet in Comfort and fully open in Sport.

Features:

• Slip-on axleback design for BMW M340i and M440i.

• Dramatic sound improvement while retaining the factory midpipe.

• Dual valve upgrade for true M-style exhaust operation.

• OEM drive modes retained: quiet in Comfort, fully open in Sport.

• Three tip finishes: brushed stainless, black, or carbon.

• Made from premium 304L stainless steel for corrosion resistance and longevity.

• Quick and straightforward installation with included clamps.

• Value-focused design with no unnecessary components.

Fitment:

• 2019-2024 BMW M340i

• 2019-2024 BMW M440i

• All models include xDrive variants

The MAD BMW M340i M440i Axleback Exhaust delivers maximum sound impact, M-style performance, and clean, hassle-free installation, making it the ultimate upgrade for discerning BMW enthusiasts