Below is information direct from Germany regarding this product.
It may show additional information about fitment and specification.
Downpipe Kit without catalyst converter for BMW M140(x)i M240i 340i 440i & 540i
made out of high quality stainless steel 1.4301 (SS304)
complete Ø3,5 and adapter for stock exhaust
without catalyst converter
100% perfect fit, replace OEM
less thermal load on the turbocharger
more power by reducing back pressure
significantly more torque
Only suitable for cars without GPF!
Error display in the DME, because removed catalyst converter.