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Airtec Motorsport

Airtec De-Cat Downpipe for BMW M140i M240i M340i / B58 Models

Airtec De-Cat Downpipe for BMW M140i M240i M340i / B58 Models

Regular price £315.00 GBP
Regular price £363.77 GBP Sale price £315.00 GBP
Sale Sold out

By removing the original restrictive catalytic converter located within the factory OEM downpipe, back pressure is hugely reduced, which in return means faster response, increased power and a more aggressive exhaust note.

Supplied with an adaptor to marry up to the original exhaust system, it also fits aftermarket systems, making it the a perfect solution to replace the OEM downpipe.

One of the only manufacturers that offer a cast elbow to retain diameter!


Made from stainless steel
AIRTEC laser cut plaque
Smooth bends to ensure increased flow
Fits original and aftermarket exhaust systems
Improved performance further enhanced with remap
Will fit the following models:

F20/F21 – 140i
F22/F23 – 240i
F30/F31 – 340i
F32/F33/F36 – 440i
G30/G31/G38 – 540i
G32 GT 640i
G12 740i
G01 X3 M40i
G02 X4 M40i
Please note: De-cats are sold for motorsport and off road use only and will not pass a UK MOT test or police road side checks.


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