F8X Catted Downpipes

The Active Autowerke F8X catted downpipes are engineered for a precise fitment on the BMW F87 M2C, F80 M3, and F82 M4 models. These performance-oriented downpipes integrate a pair of 4-inch GESI G-Sport catalytic converters, designed to enhance your vehicle's exhaust flow and performance without triggering a Check Engine Light (CEL). The GESI G-Sport converters utilize advanced Gen 2 technology and are EPA registered, making them compliant for use on 1996 and newer OBD2 vehicles in 49 states. Constructed with a full 304 stainless steel body and substrate, these high-flow units are rated for engines producing 500 to 850 horsepower. Their design significantly reduces back-pressure, allowing for maximum horsepower gains while minimizing harmful emissions and ensuring you avoid failed emissions tests. Installation is straightforward with a bolt-on design requiring no cutting or welding, and they accept the OEM O2 sensor heat shield. The construction features TIG welded 304 stainless steel for durability, a casted upper stainless steel V-band for precise fitment, and a 400-cell per square inch catalyst. These downpipes are capable of reaching operational efficiency within 9 seconds of startup and can withstand temperatures up to 1500F. It is important to note that these catalytic converters are not legal for use on vehicles registered in California. Active Autowerke backs this product with a 5-Year/50,000-Mile warranty on the shell and tube ends, and a 2-year/25,000-mile warranty on the catalytic core. The warranty will be void if excessive burble (greater than stock) is present, as this can physically damage the catalytic core.