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 -
BMW X3 M35i F25 LCI model 2014
BMW X4 M35i F26 model 07/2014
BMW X4 M40i model 07/2014

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
high quality racing catalytic converter (300CPSI and Euro 6 coating)
weight: 4,0kg
connection diameter 105mm

Error display in the DME possible.