Valvetronic Catback Exhaust for BMW M340, M440i

PHP Performance Cat-Back Exhaust System

Fits: BMW G20 340i (2019–2024) & G22/G23 M440i (2021–2024)
Estimated Power Gains: +8–12 HP / +10–14 lb-ft Torque

Unlock deeper sound, sharper throttle response, and measurable performance gains with the PHP Cat-Back Exhaust System, designed specifically for B58-powered BMW models. Built for both street and spirited driving, this system increases exhaust flow while delivering a refined, aggressive tone without drone.

Each system is tailored to its platform—sedan or coupe/convertible—to ensure exact fitment, optimized tip placement, and seamless installation. While both models share the B58 engine, differences in chassis and underbody design require dedicated fitment.

Features:

• +8–12 horsepower / +10–14 lb-ft torque (average gains on stock setup)

• T304 stainless steel construction for long-lasting durability

• Mandrel-bent piping with TIG-welded joints for smooth flow

• Available in resonated or non-resonated mid-pipe options

• Polished or black chrome quad tips (custom finishes available)

• OEM-style exhaust valve compatibility (if applicable)

Vehicle Compatibility – Select Below:

• BMW G20 340i Sedan (2019–2024)

• BMW G22/G23 M440i Coupe/Convertible (2021–2024)

Note:
These systems are not interchangeable between models due to unique mounting points, rear diffuser designs, and pipe routing. Select your correct model to ensure proper fit. For questions about installation or compatibility, contact PHP through the support portal.