Active Autowerke BMW S58 F97/F98 X3M/X4M Downpipes w Aflow CATs 1M we wanted our F8X Mid

we wanted our F8X Mid Pipe to stand out from the rest

a solid 15+hp boost and key gains in the midrange with the valve open while the sound comes out non intrusive with a rich mellow tone with the valve closed

Eight-Rib Pulley System

Active AFlow Series Catalytic Converters are EPA registered and compliant in 49 states and fully OBD2 compliant

Bottom line: you get to experience M3 performance in a 328i at an incredibly affordable price

Active Autowerke BMW S58 F97/F98 X3M/X4M Downpipes w Aflow CATs 1M we wanted our F8X MidNO PERFORMANCE TUNE NEEDED. NOTE: Fitment applies to US model cars only unless specifically stated. We cannot guarantee fitment to non US model cars. Active Autowerke BMW X3M S58 Downpipes BMW introduced a new valvetronic, single turbo version of its direct injection engine for the later F Chassis models beginning in 2016 and continues into the G Chassis models the evolution to the S58 engine continues with the twin turbo variant used in the M series