Wagner Tuning BMW B58 Catless Decat Turbo Downpipe 3.5in SS304 - M140i M240i 340i 440i F20 F21 F22 F30 F31 F32 F33 F36 (2016+, xDrive, Direct Fit)

Wagner Tuning B58 Race Pipe for BMW F-Series 1, 2, 3 and 4 Series

Transform the way your B58-powered BMW drives and sounds with this Wagner Tuning catalyst-delete front section. Engineered from premium stainless steel 1.4301 SS304 and built in a full 3.5 inch 90 mm diameter, it replaces the restrictive factory catalytic converter with a straight-through turbine outlet section and a supplied adapter to mate to the original cat-back system. Expect reduced exhaust back pressure, quicker boost response, stronger mid-range pull and a purposeful, motorsport-inspired soundtrack.

The design eases thermal load on the turbocharger for improved reliability while delivering the free-flow performance enthusiasts demand on track and off-road venues. It installs as a plug-and-play replacement for the OE unit and retains a neat factory-style connection to the rest of the exhaust.

Why enthusiasts choose it

• Catalyst delete configuration for maximum gas flow and lower restriction
• Precision-built from stainless steel 1.4301 SS304 for longevity
• Full 3.5 inch 90 mm construction with adapter to the stock mid-pipe
• Direct replacement with excellent fitment on F-series B58 applications
• Reduced thermal stress on the turbocharger assembly
• Noticeably faster spool and sharper throttle response with increased torque
• Deep, aggressive exhaust tone with a motorsport character

We have fitted this Wagner Tuning unit on our own projects and customer cars. Feedback has been consistently positive on quality, fit and the driving improvement it delivers.

Vehicle fitment

• 2016+ BMW M140i and M140i xDrive F20 F21
• 2016+ BMW M240i and M240i xDrive F22
• 2016+ BMW 340i and 340i xDrive F30 F31
• 2016+ BMW 440i and 440i xDrive F32 F33 F36

Part details

• Part number: 500001027.CATLESS
• Brand: Wagner Tuning
• Material: Stainless steel 1.4301 SS304
• Diameter: 3.5 inch 90 mm
• Configuration: Cat delete section with adapter to OE exhaust
• Warranty: 2 years manufacturer warranty

Fitting

Professional fitting is available at MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote. We recommend replacing the downpipe gasket during installation.

Compatibility check

To ensure the correct part for your car, we will verify fitment before dispatch. Provide your UK registration or the last 7 digits of your VIN at checkout.

Important information

Removes the catalytic converter. For off-road and motorsport use only where permitted.

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