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 38 thick flanges into 1 - 34 primaries and 2 - 12 slip - fit collectors. Features Y - pipe and catted 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.