The BMW B58 Catless or High Flow Catted Downpipe is the best mod you can do. Do you want to unlock high horsepower numbers with your BMW B58 Engine in your BMW M140i, M240i, M340i, M440i, 540i, 640i or 740i? Installing a Downpipe for your BMW B58 will provide great performance and is the best bang for buck modification. Purchase your B58 downpipe for more performance.

DCE Parts - B58 Downpipe - F & G Chassis - BMW M140i, M240i, 340i, 440i, 540i, 640i, 740i & XDRIVE - (Slip On Clamp Type - Non-OPF)

The downpipe is 5.2 inch (132mm) measured at the biggest point including heat shield. The downpipe is 5.1 inch (129mm) excluding the heat shield

Through the placement of a bigger downpipe the turbo spools up quicker due to a lower back pressure. The turbo starts to build up pressure at lower speeds. It also manages to build it pressure quicker after gear changes. The installation of the downpipe alone usually provides 15 HP and 25Nm extra. By installing the downpipe, you will enhance the sound of your vehicle as well.

For proper operation and optimal power output, the vehicle will need remapping of the ECU to accommodate the catless B58 Downpipe. This product is not suitable for road use.

Options

Most DCE Parts Downpipes can be specced with a full straight Decat, a Catalytic Converter Look (but with empty cat) or with a High Flow Cat.

DCE Parts introduced a line up of Downpipes that not only offer more performance, but also much nicer sound. The DCE Parts Downpipes are optionally specced with a Catalytic Look while being catless, for enhance sound and a OE/Catted look. The DCE Parts Downpipe can also be fitted with a High-Flow Cat.

Note:

The Catless downpipes and Catless Catalytic Look Downpipes are only suitable for off-road use. The 200 Cell Sport Metallic Catalytic Converter Downpipes are suitable for road use in most Countries. We recommend to check your local law before purchasing the downpipes.

Contact us for more information.

Please check the outlet type of your OEM Downpipe, this part is suitable for vehicle with the Slip On Clamp Type. The difference usually is OPF and no OPF filter.

Please note that the downpipe only fit on cars with Non-OPF Slip On Clamp Type exhaust.

Please feel free to contact us to ask for the correct fitment.

For the V-Band Clamp OPF version, please follow this link:

https://www.psr-parts.com/collections/best-selling-collection/products/dce-parts-b58-downpipe-f-g-chassis-bmw-m240i-m340i-m440i-540i-640i-745e-840i-z4-supra-xdrive-opf-v-band-flange-type

• BMW 1-Serie F20 140iX - 2016-
• BMW 1-Serie F20 M140i - 2016-
• BMW 1-Serie F21 140iX - 2016-
• BMW 1-Serie F21 M140i - 2016-
• BMW 2-Serie F22 240iX - 2016-
• BMW 2-Serie F22 M240i - 2016-
• BMW 2-Serie F23 240iX - 2016-
• BMW 2-Serie F23 M240i - 2016-
• BMW 3-Serie F30 340i - 2016-
• BMW 3-Serie F30 340iX - 2016-
• BMW 3-Serie F31 340i - 2016-
• BMW 3-Serie F31 340iX - 2016-
• BMW 4-Serie F32 440i - 2016-
• BMW 4-Serie F32 440iX - 2016-
• BMW 4-Serie F33 440i - 2016-
• BMW 4-Serie F33 440iX - 2016-
• BMW 4-Serie F36 440i - 2016-
• BMW 4-Serie F36 440iX - 2016-
• BMW 5-Serie G30 540i - 2016-
• BMW 5-Serie G30 540iX - 2016-
• BMW 5-Serie G31 540i - 2016-
• BMW 5-Serie G31 540iX - 2016-
• BMW 6-Serie G32 640i - 2017-
• BMW 7-Serie G11 740i - 2016-
• BMW 7-Serie G11 740Li - 2016-
• BMW 7-Serie G11 740LiX - 2016-
• BMW 7-Serie G12 740i - 2016-
• BMW 7-Serie G12 740Li - 2016-
• BMW 7-Serie G12 740LiX - 2016-

 In some cases, the 2018+ F-series BMW B58 equipped vehicles will also have the OPF Version from the factory. If you're in doubt, please do not hesitate to contact us.

Note:

Certain products, such as exhaust components or tuning software, may alter or remove emissions systems. These parts are intended for off-road or motorsport use only and may not be legal for road use in your country. It is the buyer’s responsibility to ensure compliance with all local laws and regulations. Use at your own risk. These products are intended for off-road, race, or competition use only, and are not legal for use on public roads or vehicles registered for street use in the United States. It is the customer’s responsibility to ensure compliance with all local, state, and federal laws. Installation or use of these products on pollution-controlled vehicles may violate the U.S. Clean Air Act and could result in significant fines or penalties.