Wagner BMW B58 Catless Downpipe for M140i, M240i, 340i and 440i
Unlock serious performance and sound from your BMW B58 with the Wagner catless downpipe. This de-cat downpipe is a direct replacement for the factory catalytic converter and delivers reduced back pressure, faster turbo spool, more power and significantly more torque. Built from high quality stainless steel 1.4301 SS304 with full 3.5 inch pipework and an adapter to the stock exhaust, it is the go-to B58 downpipe upgrade for BMW M140i, M240i, 340i and 440i owners who want maximum flow and a sharper, more aggressive exhaust note.
BMW B58 downpipe upgrade. Catless downpipe. Decat downpipe. De-cat pipe. M140i downpipe. M240i downpipe. 340i downpipe. 440i downpipe. F-series B58 turbo downpipe. 3.5 inch stainless steel B58 downpipe. Performance exhaust downpipe for BMW B58.
Why choose this Wagner catless downpipe
- Catless de-cat design for maximum flow and lower back pressure
- Made from high quality stainless steel 1.4301 SS304 for durability
- Complete 3.5 inch construction with adapter for the OEM cat-back exhaust
- Direct-fit replacement for the OEM downpipe with 100 percent perfect fitment
- Less thermal load on the turbocharger for improved reliability
- More power and noticeably more torque with quicker turbo spool and sharper throttle response
- Enhanced, motorsport-inspired exhaust sound
We have installed and used this Wagner B58 catless downpipe on our own cars and customer builds, and feedback has been outstanding for fitment, quality and drivability improvements.
Vehicle compatibility
- 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
Installation and fitting
Professional fitting is available at Nforcd in Warwickshire. Email Sales@nforcd.com to request a fitting quote. We also recommend replacing the downpipe gasket during installation.
Compatibility check
To ensure correct fitment, we run a compatibility check before dispatch. Provide your UK registration or the last 7 digits of your VIN at checkout and we will verify your order.
Part details
- Part number: 500001027.CATLESS
- Manufacturer: Wagner
- Warranty: 2 years manufacturer warranty
- Configuration: Catless downpipe includes adapter for stock exhaust
- Material: Stainless steel 1.4301 SS304
- Diameter: 3.5 inch
Important information
This product removes the catalytic converter and is intended for off-road and motorsport use only where permitted.
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