The Downpipe Kit fits in to:

BMW M135i(x) F20 / F21 model 07/2013 –
BMW M235i(x) F22
BMW M2 F87 N55 (not suitable for Competition version)
BMW 335i(x) F30 / F31 / F34 model 07/2013 –
BMW 435i(x) F32 / F33 model 07/2013 –

Replacement for OEM BMW Part# 18328602882

made out of high quality stainless steel 1.4301 (SS304)
100% perfect fit, replace OEM
less thermal load on the turbocharger
more power by reducing back pressure
significantly more torque
without catalytic converter
connection diameter 118mm

*ECU will need to be coded to avoid engine management light errors.