2006-09 Chevy 6.0L Trailblazer SS 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 1-3/4″ primaries and 2-1/2″ slip-fit collectors. Features Y-pipe and off-road leads to fit to 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.