Active Autowerke BMW S58 F97/F98 X3M/X4M Downpipe exhaust upgrade

IN STOCK NOW - CONTACT ONE OF OUR RACE DEALERS TO PURCHASE NOTE: Fitment applies to US model cars only unless specifically stated. We cannot guarantee fitment to non-US model cars. **This product is a part of the Active Autowerke Motorsport Collection. It is for RACE and OFF-ROAD USE ONLY! ***Before your order ships you MUST sign and return the Off Road Use Only Waiver available HERE. Please email, fax or take a photo of the completed form. You can email it to your sales rep or to info@activeautowerke.com and you can fax it to us at (305) 253-8921*** Active Autowerke BMW X3M/X4M S58 Downpipe 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 vehicles. The Active Autowerke S58 downpipes for the X3M and X4M helps unleash some of the potential that is restricted by the OEM d