Stainless Power 2011-14 Mustang GT Headers 1-7/8in Primaries High-Flow Cats 3in X-Pipe Stainless Works SM11HCATX

2011-14 Mustang GT headers with 1-7/8" primary tubes, 3" X-Pipe and 3" dia catted lead pipes that mate to the factory connection point. Tig welded 304 SS headers with 3/8" thick flanges and 3" dia slip fit collectors with merge spikes. This system replaces the factory manifolds, catalytic converters and H-Pipe with a superior performing lifetime guaranteed bolt-on system.