Downpipe Kit with 200CPSI Racing catalyst for BMW M2/M3/M4 F80/82/83/87

made out of high quality stainless steel 1.4301 (SS304)
complete Ø3 Inch and adapter for stock exhaust
Racing Metal Catalytic Converter (200CPSI with high quality EURO 6 coating)
100% perfect fit, replace OEM
less thermal load on the turbocharger
more power by reducing back pressure
significantly more torque

Error display in the DME possible.