Downpipe Kit without catalyst fits for following models BMW G20/21 M340i 3,0L 285KW/374PS from 2020 (OPF-Modell) BMW G30/31 540i 3,0L 250KW/340PS from 2018 (OPF-Modell) BMW G32 640i 3,0L 250KW/340PS from 2018 (OPF-Modell) BMW G14/15/16 840i 3,0L 250KW/340PS from 2019 (OPF-Modell) BMW Z4 G29 M40i 3,0L 250KW/340PS from 2019 (OPF-Modell) Toyota Supra MK5 A90 GR 3,0L 250KW/340PS from 2019 (OPF-Modell) Replacement for OEM BMW Part# 18329897313 made out of high quality stainless steel 1.4301 (SS304) complete Ø3,5 and adapter for stock exhaust 200CPSI EU6 Racing Metal Catalytic Converter / optionally 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 equiped wit OPF! Error display in the DME possible.