APEXBUILT® BMW G-CHASSIS B58 HIGH-FLOW CATTED DOWNPIPE (2018+)

ApexBuilt® BMW G-Chassis B58 High-Flow Catted Downpipes offer... • Industry-leading build quality. • Perfect fitment, guaranteed. • Drastically improved throttle response, quicker turbo spool, and an aggressive exhaust note versus OEM. • GESI 400-Cell UHO Gen2 cats, resulting in 49 state emissions compliance • Estimated gains of 20-25+ wheel horsepower and 30-35+ TQ when installed on a vehicle that is not tuned. • Estimated gains of 45+ HP and 50+ TQ over stock power levels when paired with an aftermarket ECU tune. • TIG-welded T304 stainless steel construction, assembled by hand in Naples FL. • Lifetime warranty. PLEASE NOTE: These these parts are for OFF ROAD / RACE USE ONLY. We advise you to run a tune on your vehicle for best results. NOT CARB certified, not street legal in CA. Fits the following vehicles*: 2021+ BMW M240i 2019+ BMW G20 M340i 2017+ BMW G30 540i 2018+ BMW G01 X3 M40i 2018+ BMW G02 X4 M40i *xDrive models also supported.