BMW M140i / M240i F2x and 340i / 440i F3x Armytrix Decat Downpipe

Made from high quality T304 stainless steel available without specific treatment or covered with a ceramic coating to limit thermal propagation, this Armytrix decat downpipe intended for the BMW M140i / M240i F2x and 340i / 440i F3x offers a particularly aggressive sound and a significant power gain. With a 3.15" / 80mm diameter, this downpipe coming with its reducer matching the OEM catback, is equipped with a cat simulator to prevent check engine light due to standard catalyst removal.