BMW G20/G22, M340i/M440i Stainless Steel Valved Exhaust

BMW G20/G22 M340i/M440i Stainless Steel Valved Exhaust

Transform the sound and performance of your BMW G20 M340i or G22/G23/G26 M440i with this Stainless Steel Valved Exhaust System — engineered to deliver an aggressive exhaust note, improved exhaust flow, and the versatility of switchable exhaust valves for both everyday driving and spirited performance.

Designed specifically for the B58 Gen 2 (B58TU) platform, this premium valved exhaust system replaces the restrictive factory rear section with a high-flow mandrel-bent stainless steel design. The integrated electronic valve system allows you to switch between a refined, comfortable exhaust tone and a deep, aggressive motorsport-inspired soundtrack at the touch of a button.

Manufactured from premium T304 stainless steel with precision TIG welding throughout, this exhaust system offers exceptional durability, corrosion resistance, and long-term reliability. Whether paired with the factory downpipe or an upgraded high-flow system, it delivers improved throttle response, enhanced turbo acoustics, and a significantly more engaging driving experience.

Perfect for enthusiasts looking to combine everyday comfort with exhilarating performance whenever desired.

Key Features

Integrated Valved Exhaust System

Electronically controlled exhaust valves allow you to switch between a quiet cruising mode and an aggressive performance exhaust note.

Premium T304 Stainless Steel Construction

Manufactured from high-quality T304 stainless steel for exceptional durability, corrosion resistance, and heat tolerance.

Increased Exhaust Flow

Mandrel-bent tubing reduces exhaust restriction for improved engine breathing and performance.

Precision TIG Welded

Engineered for maximum strength and long-term reliability under demanding driving conditions.

Aggressive Quad Tip Design

Features premium polished exhaust tips that perfectly complement the sporty styling of the G-Series platform.

Direct Bolt-On Fitment

Designed specifically for BMW G20 M340i and G22/G23/G26 M440i models using factory mounting locations.

Performance Benefits

• Improved exhaust flow
• Sharper throttle response
• Enhanced turbo spool acoustics
• Reduced exhaust backpressure
• Aggressive performance exhaust note
• Switchable quiet and loud driving modes
• Excellent supporting modification for tuned vehicles

Performance gains may vary depending on ECU calibration and supporting modifications.

Sound Characteristics

With the valves closed, the exhaust provides:

• Refined and comfortable cruising sound
• Minimal cabin drone
• Ideal for everyday driving and long-distance trips

With the valves open, the exhaust delivers:

• Deep and aggressive exhaust tone
• Increased exhaust volume
• Enhanced turbo spool and overrun acoustics
• Sportier cold starts
• More engaging driving experience throughout the rev range

Vehicle Fitment

BMW G20 M340i Sedan (2019+)
BMW G21 M340i Touring (2019+)
BMW G22 M440i Coupe (2021+)
BMW G23 M440i Convertible (2021+)
BMW G26 M440i Gran Coupe (2021+)

3.0L Turbocharged B58 Gen 2 (B58TU) Engine

Please Note

Professional installation is strongly recommended.

Exhaust sound may vary depending on whether the factory or an aftermarket downpipe is installed.

Vehicles equipped with OPF/GPF emissions systems may require an OPF-compatible version depending on market specification.

Why Choose Proven Performance Parts

We specialise in high-performance parts for European vehicles — including Volkswagen GTI & R models, Audi S/RS platforms, and BMW M vehicles. Every product we offer is carefully selected for its quality, fitment, and real-world performance — tested by enthusiasts, for enthusiasts.