Stainless steel downpipe for BMW models with N20 engines, designed to significantly improve exhaust gas flow compared to the original system. The large 4" diameter reduces restriction, resulting in increased performance potential and a more direct throttle response. It is equipped with connections for both the control and monitor lambda probes. Supplied without a bracket for rubber mounting points.

Advantages

• Significantly improved exhaust gas flow
• More performance potential
• More direct throttle response
• Large 4" diameter
• Connections for control and monitor lambda probe

Technical specifications

• Type: Downpipe
• Material: Stainless steel
• Diameter: 4"
• Lambda probe connections: control + monitor
• Rubber suspension mounting: not included
• Mounting: bolt-on

Compatibility

• BMW 1 Series F20 / F21
– 125i
– Power: 160 kW
– Engine: N20
- Year of construction 2012 – 2016

• BMW 2-Series F22 / F23
– 220i, 228i
– Power: 135 / 180 kW
– Engine: N20
- Year of construction 2013 – 2016

• BMW 3 Series F30 / F31 / F34
– 320i, 328i, 328i xDrive
– Power: 135 / 180 kW
– Engine: N20
– Year of construction 2011 –

• BMW 4 Series F32 / F33 / F36
– 420i, 420i xDrive, 428i, 428i xDrive
– Power: 135 / 180 kW
– Engine: N20
- Year of construction 2013 – 2016

Contents

• Stainless steel downpipe

Frequently Asked Questions

Is this downpipe street legal?
This depends on local regulations and the design of the exhaust system. Always check this beforehand.

Can both lambda sensors be mounted?
Yes, the downpipe is equipped with connections for both control and monitor lambda probes.

Is ECU tuning recommended?
Yes, an ECU modification is recommended for optimal operation and maximum performance.