BMW N20 2.0T Stainless Steel Catless Turbo Downpipe
BMW F30 320i / 328i / 328xi | F31 / F34 Applications | TIG-Welded T304 Stainless Steel
Upgrade your BMW N20 turbocharged exhaust system with a performance-focused stainless steel downpipe designed for compatible BMW 320i, 328i and 328xi 2.0L turbo applications. Featuring TIG-welded T304 stainless steel construction, dual oxygen sensor ports and a large V-band turbo connection, this catless downpipe is built for dedicated off-road and competition performance projects.
High-Flow BMW N20 Turbo Downpipe for F30, F31 and F34
The XS-POWER BMW N20 catless downpipe is engineered for compatible BMW 2.0-liter turbocharged four-cylinder applications, including selected F30 320i and 328i models, 328xi all-wheel-drive configurations, and related F31 and F34 chassis applications.
The downpipe is an important part of the turbocharged exhaust system, connecting the turbocharger outlet to the downstream exhaust. This performance design eliminates the catalytic converter from the downpipe assembly and provides a less restrictive exhaust path for applications where such modifications are permitted.
Whether you are preparing an N20-powered BMW for track use, upgrading a compatible turbocharged exhaust configuration, or replacing a performance downpipe in a dedicated competition build, the XS-POWER stainless steel assembly offers durable materials and a performance-oriented design.
Premium Features and Construction
- T304 stainless steel construction: Corrosion-resistant material suited to high-temperature turbo exhaust environments.
- Precision TIG welding: Strong welded construction for durability and reliable exhaust routing.
- Catless performance design: Eliminates the catalytic converter for permitted off-road and competition applications.
- Large V-band connection: Specified 3.8-inch inside diameter and 4.6-inch outside diameter connection dimensions.
- Dual oxygen sensor provisions: Two O2 sensor bungs for compatible factory sensor locations.
- OEM-style installation configuration: Intended as a bolt-on installation where the original turbocharger and exhaust connections match.
- Turbo performance applications: Suitable for compatible stock-style and aftermarket turbocharger configurations using the specified connections.
- New condition: Brand-new stainless steel performance exhaust component.
BMW Vehicle Fitment and Compatibility
This downpipe is intended for compatible BMW N20 2.0L turbocharged applications in the F30, F31 and F34 chassis families. Confirm the exact engine, turbocharger outlet, exhaust connection and vehicle configuration before ordering.
| BMW Model | Chassis | Engine | Fitment Notes |
|---|---|---|---|
| BMW 320i Sedan | F30 | N20 2.0T | Selected N20-equipped vehicles |
| BMW 328i Sedan | F30 | N20 2.0T | Selected N20-equipped vehicles |
| BMW 328xi / 328i xDrive | F30 | N20 2.0T | Verify AWD clearance and exhaust routing |
| BMW 3 Series Touring | F31 | N20 2.0T | Verify model, market and connection type |
| BMW 3 Series Gran Turismo | F34 | N20 2.0T | Verify turbo and exhaust connection |
The advertised application range is approximately 2011-2016, depending on model and market. Not every 320i, 328i or xDrive vehicle in those years uses the same engine or exhaust connections. Some vehicles use the N26 or later B48 engine instead of the N20. This listing is for compatible N20 configurations only. Confirm the vehicle's engine code and turbocharger flange before ordering. Fitment to N26 or B48 applications is not guaranteed.
Technical Specifications
| Brand | XS-POWER |
|---|---|
| Product Type | Catless turbo downpipe |
| Engine | BMW N20 2.0L turbocharged four-cylinder |
| Material | T304 stainless steel |
| Welding | TIG welded |
| Turbo Connection | V-band style |
| Specified V-Band ID | 3.8 inches |
| Specified V-Band OD | 4.6 inches |
| Oxygen Sensor Ports | 2 |
| Catalytic Converter | Not included |
| Installation | Bolt-on for matching OEM-style connections |
| Gaskets and Bolts | Not included |
| Condition | Brand new |
Performance Benefits for BMW N20 Turbo Builds
A turbo downpipe is the first major exhaust component after the turbocharger. Reducing restriction in this section can help improve exhaust evacuation and support turbo system efficiency when paired with a compatible engine and exhaust setup.
- Supports improved exhaust flow in compatible performance applications.
- Can help reduce exhaust restriction downstream of the turbocharger.
- Suitable for dedicated N20 track and competition builds.
- Can complement compatible aftermarket turbo and exhaust upgrades.
- Stainless steel construction offers corrosion resistance and durability.
- May produce a more pronounced exhaust sound compared with a factory catalytic converter assembly.
Manufacturer-supplied promotional estimates reference gains of up to 15 horsepower and 25 lb-ft of torque. These figures have not been independently verified for every application and are not guaranteed. Actual results depend on tuning, turbocharger, exhaust configuration and vehicle condition.
Package Includes
- 1 x XS-POWER T304 stainless steel BMW N20 catless turbo downpipe
- 2 x Integrated oxygen sensor bungs
Gaskets, mounting bolts and oxygen sensors are not included.
Installation and Fitment Requirements
- Professional installation is recommended.
- Verify BMW N20 engine identification before purchasing.
- Confirm V-band flange geometry and dimensions against the original turbo outlet.
- Check the downstream exhaust connection before installation.
- Confirm clearance on xDrive and non-xDrive vehicle configurations.
- Additional hardware, gaskets or installation supplies may be required.
- Vehicles equipped with catalyst monitoring may display emissions-related fault codes after installation.
- Aftermarket turbochargers must use a compatible outlet flange and exhaust configuration.
BMW N20 Downpipe - Frequently Asked Questions
Does this downpipe fit a BMW F30 328i with the N20 engine?
It is intended for compatible F30 328i N20 turbocharged applications. Confirm the turbocharger outlet flange, engine code and downstream exhaust connection before ordering.
Will this fit a BMW 320i 2.0T?
Selected BMW 320i F30 models equipped with the N20 turbo engine are included in the advertised application range. Fitment should be verified using the vehicle's exact engine and turbocharger configuration.
Does it work with the BMW 328xi or 328i xDrive?
The 328xi / 328i xDrive is included among the listed applications. Verify all-wheel-drive exhaust routing and component clearance before purchase.
Is this compatible with the BMW N26 engine?
This listing is intended for N20 applications. N26 compatibility has not been confirmed and should not be assumed.
Is the entire downpipe 4 inches in diameter?
The supplied specifications identify a V-band connection measuring 3.8 inches inside diameter and 4.6 inches outside diameter. These dimensions do not establish a continuous 4-inch pipe diameter.
How many oxygen sensor bungs are included?
The downpipe includes two integrated O2 sensor bungs. Oxygen sensors themselves are not included.
Does the package include installation hardware?
No. Gaskets and mounting bolts are not included. Installation may require additional hardware or replacement seals.
Can this downpipe increase horsepower?
A less restrictive downpipe can support exhaust flow in a compatible turbo performance build. Any horsepower or torque improvement depends on the engine, tuning and other components. No specific power gain is guaranteed.
Is this downpipe street legal?
No street-use or emissions compliance approval is claimed. This is a catless downpipe intended only for off-road or competition applications where its use is permitted.
XS-POWER BMW Turbo Performance Parts - Worldwide Shipping
XS-POWER supplies turbochargers, turbo manifolds, downpipes, exhaust components, charge pipes and performance hardware for BMW N20, N54, N55 and other turbocharged engine platforms.
We offer worldwide shipping options to eligible destinations. International shipping rates, customs charges and delivery times vary by destination.
This product does not contain a catalytic converter and is not represented as emissions compliant or legal for use on emissions-controlled public-road vehicles. Installation or sale may be restricted by applicable laws. Buyer is responsible for confirming legal use and vehicle compatibility. Fitment assumes matching OEM-style turbo and exhaust connections; modified or aftermarket combinations may require additional adaptation.
Get more power and better exhaust flow with this BMW F30 N20 catless downpipe, designed for the 2011–2016 328xi, 328i, and 320i models (F30, F31, F34). Built from high-quality T304 stainless steel, this downpipe removes the factory catalytic converter to reduce back pressure and support better turbo response. It’s a direct bolt-on for OEM or aftermarket turbos using stock exhaust systems.
With TIG welding for long-lasting strength and a 3.8" ID to 4.6" OD V-band connection, this BMW F30 320i downpipe supports gains of up to 15HP and 25TQ. Includes two O2 sensor bungs for factory sensor fitment. Gasket and bolts are not included.
Specifications:
- Material: T304 Stainless Steel
- Welds: TIG Welded
- Fitment: Direct bolt-on
- HP Gain: Up to 15HP
- Torque Gain: Up to 25TQ
- Sensor Ports: 2x O2 Bungs
- V-Band Size: 3.8" ID / 4.6" OD
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