Upgrade your BMW M340i / M440i (G20/G22) with our
SS304 Stainless Steel Catback Exhaust System, designed for the B58 3.0L inline-six turbo engine. Built for performance and durability, this exhaust system replaces the factory restrictive pipes to deliver improved airflow, a deeper tone, and a sportier rear-end look—all while maintaining a clean, bolt-on fit for daily driving and performance builds.
Key Features & Benefits
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Premium SS304 Stainless Steel Construction
Crafted from durable 304 stainless steel, this exhaust resists corrosion and high heat, ensuring long-lasting performance under street and spirited driving conditions.
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Free-Flow Mandrel-Bent Tubing
Smooth mandrel-bent piping reduces exhaust backpressure, helping the B58 engine breathe more efficiently for better throttle response and consistent power delivery.
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Aggressive, Drone-Free Sound Tuning
Specifically tuned for the B58 engine to deliver a rich, deep tone under acceleration, while eliminating unwanted cabin drone at cruising speeds.
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Direct Bolt-On Fitment
Precision-engineered to match factory mounting points, hangers, and pipe connections. No cutting, welding, or modifications required for installation.
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Optional Electronic Valve Control (if applicable)
Available with optional valve control to adjust sound levels between quiet mode for daily driving and sport mode for a more aggressive exhaust note.
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Premium Finish & Exhaust Tips
Polished or matte stainless steel construction, with optional carbon fiber or polished tips to enhance the rear-end styling of your G20/G22.
