BMW m340i downpipe

BMW M340i Performance Downpipe

Unlock the true performance of your BMW M340i with a high-flow performance downpipe. Designed to improve exhaust flow by reducing back pressure, this upgrade allows your turbocharger to spool faster while delivering noticeable gains in power, throttle response, and sound.

Whether you’re running a stock tune or planning a Stage 2 setup, a performance downpipe is one of the most effective modifications for the B58 engine.

Features

• High-flow performance design
• Improved exhaust gas flow
• Faster turbo spool
• Increased horsepower and torque (with supporting modifications)
• More aggressive exhaust note
• Precision TIG-welded stainless steel construction
• Direct bolt-on fitment
• Compatible with OEM and most aftermarket cat-back exhaust systems

Benefits

• Improved throttle response
• Enhanced turbo efficiency
• Deeper, sportier exhaust tone
• Ideal upgrade for Stage 2 tuning
• Built for durability and long-lasting performance

Vehicle Fitment

BMW M340i (G20/G21)

• 2019+
• B58 3.0L Turbocharged Engine

What’s Included

• 1 × Performance Downpipe
• Required mounting hardware (where applicable)

Important Information

• Professional installation is recommended.
• ECU tuning may be required to achieve maximum performance.
• This product is intended for off-road or motorsport use where applicable. Please ensure compliance with your local emissions and road regulations before purchasing.

Need help confirming fitment?
Send us your vehicle’s year, model, and VIN, and we’ll make sure you’re ordering the correct part before dispatch.