BMW M140I M240I 340I 440I B58 DECAT DOWNPIPE
MTC Motorsport BMW M140i M240i 340i 440i 540i and 740i 4.5” stainless steel decat downpipe for B58 engine only
- The M140i downpipe is machined from SS304 aircraft-grade stainless steel and are tig welded in house
- The B58 downpipe is made of 4.5" stainless pipe straight out of the turbo providing a sharper throttle response due to faster spool of the turbo
- This downpipe will provide noticeable power gains and a much more aggressive exhaust note which sounds truly amazing
- It produces lower temperatures and less exhaust backpressure due to the relief of the turbocharger. Also, the cylinder charge is increased
- There is also a substantial weight saving in comparison to the factory catalytic converter.
- The decat is mandrel-bent for better gas flow and maximum internal size to ensure ultimate performance without the loss of mid-range torque.
This downpipe will fit the following models with a B58 engine:
- BMW M140i 2016+ F20 and F21 and xDrive
- BMW M240i 2016+ F22 and xDrive
- BMW 340i 2016+ F30 F31 and xDrive
- BMW 440i 2016+ F32 F33 F36 and xDrive
- BMW 540i 2016+ G30 and xDrive
- BMW 740i 2016+ G11 G12 and xDrive
This will NOT fit the 2018 onwards models with the PPF filter unless it has been coded out and can be removed.