Constructed from T304 stainless steel
Weight reduction of approximately 21.7 lbs vs. OEM system
Full-length precision TIG welding
Structural optimization for thermal expansion and long-term fatigue resistance
Upgrade your BMW M340i G20 with a precision-built catback exhaust system designed for better flow, improved turbo response, and a deeper exhaust tone. Available in 304 stainless steel or titanium, this system is engineered for OEM-fitment and easy bolt-on installation.
Key Features
• Direct Bolt-On Fitment
Designed specifically for the BMW M340i G20/G21 platform. No cutting or welding required.
• Stainless Steel or Titanium Options
Choose 304 stainless steel for durability or titanium for weight reduction and a sharper exhaust tone.
• High-Flow Piping
Mandrel-bent piping ensures smooth airflow, reducing back pressure and supporting engine performance.
• Enhanced Exhaust Sound
Deeper, cleaner tone that enhances the B58 engine note without unwanted cabin drone.
• Precision Hand Welds
Clean TIG welding and accurate flanges for long-term reliability and perfect alignment.
Performance Benefits
This system works seamlessly with the stock downpipe or aftermarket high-flow downpipes.
Specifications
Fitment: BMW M340i (G20/G21), RWD & xDrive
Engine: B58
Material: 304 Stainless Steel / Titanium
Configuration: Catback system
Diameter: 3.0 inch piping
Installation Time: 1–2 hours
What’s Included
Catback exhaust assembly
Mounting hardware
Clamps
Installation guide
Installation
This catback exhaust is designed for quick installation using factory mounting points.
Compatible with both OEM downpipes and aftermarket downpipes.
No tuning required.
Compatibility
2019–2025 BMW M340i (G20)
2019–2025 BMW M340i Touring (G21)
B58 engine
RWD / xDrive
FAQ
Q: Does this exhaust fit the G21 wagon?
Yes, it fits both G20 sedan and G21 wagon models.
Q: Is there drone inside the cabin?
The system is tuned to minimize drone during daily driving.
Q: Do I need ECU tuning after installation?
Tuning is optional. The exhaust performs well on the stock ECU.
Q: Titanium and stainless sound difference?
Titanium produces a sharper, louder tone. Stainless is deeper and smoother.
Shipping & Warranty
Upgrade your BMW M340i G20 with a high-quality catback exhaust system.
Choose your material and place your order today.
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