2011-14 Ford F-150 Raptor 6.2L Truck SuperCrew headers. All tubes are CNC mandrel bent for optimal flow. Made from 304 stainless steel for maximum corrosion resistance. Starting with a CNC cut 3/8" thick flanges into 1-7/8" diameter primaries and 3" slip-fit collectors with merge spikes. Includes 3" off-road lead pipes Y-pipe and clamps. Fits factory connection point. Headers are fully TIG welded and back purged. These are TIG welded for strength and durability. These kits come with a lifetime warranty and proudly made in the USA.