BMW B58 Performance Downpipes

Performance B58 Downpipe for BMW 140i, 240i, 340i & 440i

Unlock the full potential of your BMW B58 engine with this high-quality performance downpipe engineered specifically for B58 turbo models. Designed for enthusiasts who want better exhaust flow, quicker turbo spool, and a deeper, more aggressive exhaust tone.

Manufactured from premium T304 stainless steel, this downpipe offers excellent heat resistance, corrosion protection, and long-lasting durability even under demanding driving conditions. The mandrel-bent design ensures smooth airflow and reduced back pressure, helping your engine breathe more efficiently and deliver improved performance.

Key Features

• Fits BMW models with B58 engine

• High-flow design for improved horsepower and torque

• Faster turbo spool and enhanced throttle response

• Deep, aggressive exhaust sound

• Precision TIG-welded construction

• Made from high-grade 304 stainless steel

• Direct bolt-on installation (no cutting required)

• Flex section for durability and reduced stress

• Includes mounting hardware

Why Upgrade Your Downpipe?

Factory downpipes are restrictive and limit exhaust flow. Upgrading to a performance downpipe reduces back pressure, allowing your turbocharger to spool faster and your engine to produce more power. Ideal for tuned or stock vehicles looking for better sound and performance.

Compatibility

• BMW M140i (F20/F21)

• BMW M240i (F22/F23)

• BMW 340i (F30/F31/F34)

• BMW 440i (F32/F33/F36)

• BMW 540i (G30/G31)

• BMW X3 M40i / X4 M40i

• BMW Z4 M40i

• Toyota Supra A90/A91

Engine: B58 3.0L Single-Turbo

Perfect for performance builds, stage upgrades, or anyone wanting a more aggressive driving experience from their B58-powered BMW.