MAD BMW M340 M440 Catback Exhaust (G20 & G22)

The MAD BMW M340/M440 Catback Exhaust System redefines the driving experience with enhanced performance, striking acoustics, and refined design. Engineered with precision, this exhaust system transforms your BMW into a statement of power and sophistication.

Key Features and Highlights

• Seamless Stock Tip Integration: The system is designed to reuse your stock square tips for a clean, factory-like appearance. Two pipes will discreetly point downward below the rear bumper for flawless integration (see photos).

• Optional 90mm Quad Tip Upgrade: Choose from three 90mm quad tip options for a sporty look. This upgrade requires removing the OEM tips.

• Full Catback Design: A complete system offering a richer, more aggressive sound profile to elevate your driving experience.

• Effortless Installation: This 100% plug-and-play system requires no cutting, ensuring a straightforward and completely reversible modification.

• Premium Materials: Constructed entirely from 304 stainless steel for unmatched durability and corrosion resistance.

• Optimized Flow and Sound: Featuring a larger 3.5'' single midpipe and 2.75'' diameter piping to enhance flow, improve throttle response, and deliver a sportier exhaust note.

Advanced Valve System

• Dual Valve Setup: Converts the factory single-valve system into a dual-valve design, akin to M-series cars. This upgrade ensures even flow and better sound management regardless of valve position.

• Retains OEM Controls: The stock exhaust valve actuator is repurposed, and an additional valve/actuator is integrated on the opposing side. The system works seamlessly with your vehicle’s cabin controls, maintaining quiet operation in Comfort mode and unleashing full performance in Sport mode.

Benefits

• Reuses stock tips or upgrades to quad tips for personalized styling.

• Enhances sound with a rich, aggressive tone while remaining refined.

• Improves performance with optimized flow and larger diameter piping.

• Offers a completely reversible, bolt-on solution with no permanent modifications.

• Maintains OEM valve control for an ideal balance of sound and comfort.