AIRTEC Motorsport 4.5" De-Cat Downpipe for BMW M140i B58 Engine.

By removing the original restrictive, M140i catalytic converter located within the factory OEM down-pipe, back pressure is hugely reduced, which in return means faster response (turbo spool, increased power and a more aggressive exhaust note. Please note your vehicle will perform ten-fold if you accompany this with a ECU tune.

- This will fit all vehicles with B58 engine pre 2019

- M140i - 240i - 340i - 440i - 540i etc 

If you are unsure please contact us - 07530978622

Please note;

If your M140i etc..  is post 2019, this down pipe will need to be fitted in our fabrication shop based in Wakefield, as we need to weld in a sensor for you - Price for fitting is £69.99

TO BOOK NOW - 07530978622 or leave a note in the basket section and your number and we will call you back to book you in.

Don't forget we also make custom exhaust systems!

- M140i - 240i - 340i - 440i - 540i etc