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BMW B58 4.5" Catted Downpipe (M140i, M240i, 340i, 440i & 550i)

Regular price $555.00 USD
Regular price $483.00 USD Sale price $555.00 USD
Price match

This item has been discontinued, we recommend the Wagner BMW B58 200CPSI Performance Downpipe (M140i, M240i, 340i & 440i) for a similar downpipe.


We are proud to introduce the catted downpipe for your B58 engine found on M140i, M240i, 340i, 440i, 540i, 740i & xDrive variants. 

By removing the catalytic converter that is restrictive, it significantly reduces the back pressure compared to stock downpipe, with the 200 cell race cat, this provides more power, improved exhaust note and faster spool. Our downpipe features a full 4.5″ stainless steel design as well as a CNC 304 grade stainless steel flange that offers a smooth transition from the turbo to the mid pipes.


  • 200 Cell Race Catalytic Converter
  • Smooth radius bends to decrease turbulence and increase flow.
  • Hand crafted, TIG welded, 4.5″ 304S stainless steel
  • Fits RHD and LHD models with no modification necessary.
  • Power gains from 25-30hp once tuned.
  • Fits the stock catback as well as all aftermarket catbacks.
  • MLP Lifetime Warranty on Downpipe and 2 Year Warranty on Catalytic 


2016+ F22 BMW M240i & M240i xDrive

2016+ F30/F31 BMW 340i & 340i xDrive

2016+ F32/F33/F36 BMW 440i & 440i xDrive

2016+ G30 BMW 540i & 540i xDrive

2016+ G11/G12 BMW 740i & 740i xDrive  





MLP Lifetime Warranty*


*Only 2 Year Warranty on the Catalytic


  • Price Match Guarantee

    We are committed to giving you the best price. if you find a lower price on the same item at an eligible UK retailer website, we will match it.

  • Next Day UK Delivery

    For in stock items, get FREE Guaranteed next day UK delivery for orders over £199, excluding delicate items, larger items and certain remote postal codes/areas. Same day dispatch available if your order is placed before 1pm UK Time.

  • Worldwide Shipping

    We ship worldwide via DHL International, simply enter your full address at checkout to see the shipping option(s) and quote(s). Same day dispatch available if your order is placed before 1pm UK Time on all in stock items!

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