Stainless Works 2011-14 F-150 5.0L 1-7/8in Primaries 3in High-Flow Cats X-Pipe

2011-14 Ford F-150 5.0L 2WD/ 4WD Screw/ Scab Truck Headers. Constructed entirely of 304L stainless steel, these American-made headers have 1-7/8" primaries, 3" slip fit collectors, 3" catted leads and X-Pipe inside a resonator to connect to Stainless Works performance exhausts. Stainless Works F-150 Truck systems come in two configurations: Factory Connect and Performance Connect. Factory Connect allows our headers or exhaust to easily bolt to the factory exhaust or manifolds respectively. They connect at the factory location via a Y-pipe which is necked-down to accommodate fitment. Performance Connect is designed to take advantage of performance gains not possible with the standard factory connection point. Both SW headers and SW exhaust are used in this configuration. We've developed a system which uses an X-pipe to create a true-dual system which creates the ultimate horsepower experience