IAW Competition Downpipe BMW B58 TU1 Gen 2 M340i/M440i/M240i G20/G22/G26/G42

From $295.00

  • Construction: Tig welded 4.5″ or 5″ 304 grade stainless steel
  • Power Gains: Take advantage of 25-30hp gains with any tune
  • OEM Fitment: utilizes factory mount location & fits LHD/RHD models with no modification required
  • Easy Installation: fits the factory catback exhaust and all aftermarket catback systems
  • Design: Smooth piping bends to reduce turbulence and enhance flow
  • Does not fit Gen 3 B58 TU2 found in many 2025+ BMW. Inquire if you are not sure what engine you have
  • 1x IAW Competition Downpipe BMW B58 TU1 Gen 2 M340i/M440i/M240i G20/G22/G26/G42
    $295.00

  • Subtotal $295.00

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SKU: IAW00312 Category:

Optional Cerakote can be applied to both the 4.5" and 5" downpipes:

Cerakote reduces heat transfer from the downpipe to the surrounding components, helping to keep the engine bay cooler and protect nearby parts like coolant hoses, wires, and other heat-sensitive materials. Cerakote also enhances heat dissipation which reduces the temperature of the exhaust and turbo, improving overall performance (more power) and potentially extending the lifespan of the turbo.

Fitment:

Fits all G Chassis B58 Engines! Fits both RWD/AWD (X-Drive) models

  • 2020-2024 M340/M440 G20/G22/G26
  • 2021+ M240 G42
  • 2016+ G30 BMW 540i & 540i xDrive
  • 2016+ G32 GT BMW 640i & 640i xDrive
  • 2016+ G11/G12 BMW 740i & 740i xDrive

*This is for RACE and OFF-ROAD USE ONLY!

**THIS DOWNPIPE WILL THROW A CEL WITHOUT A SOFTWARE UPGRADE FOR OFF-ROAD USE ONLY

Additional information

Size:

4.5", 5"

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