2024 X3 M40i Downpipe And Tune. A 300 cpsi stainless steel tuning downpipe (catalytic converter) for the bmw x3 m40i g01 without opf (gasoline particulate filter) can be combined with the bmw stock exhaust system as well as with the dahler tuning performance exhaust. Fits the stock catback as well as all.
Upgrade your 2018+ bmw x3/x4 m40i with our b58 downpipe. I looked into catted vs catless and.