SM11HCATX Long Tube Headers w/ 3-Inch X-Pipe & Cats

The Stainless Power SM11HCATX is a performance exhaust header system engineered for the 2011-2014 Ford Mustang GT equipped with the 5.0L engine. This kit replaces the stock manifolds, catalytic converters, and H-pipe with a high-flow design, featuring 1-7/8 inch primary tubes that lead into a 3-inch X-pipe and 3-inch diameter lead pipes. Constructed from durable TIG welded 304 stainless steel, these headers include 3/8 inch thick flanges for a robust connection. The system is designed as a direct bolt-on, connecting to the factory exhaust at the stock connection point. It comes with high-flow catalytic converters to help maintain emissions compliance in certain regions and is backed by a 24-month guarantee. Installation involves replacing the factory manifolds and associated components. This upgrade is intended to optimize airflow and exhaust scavenging, potentially leading to improved performance. The product is noted as not being California legal.