2006-09 Chevy 6.0L Trailblazer SS headers. Starting with a CNC cut 3/8" thick flanges into 1-3/4" primaries and 2-1/2" slip-fit collectors. Choose between factory connect or performance connect and high-flow cats. Stainless Works Header Kits are built from corrosion resistant 304 stainless steel, our headers are TIG welded for strength and durability at our state-of-the-art facility in Streetsboro, Ohio. We stand by our products with a lifetime warranty on material and craftsmanship, and as always, our products are proudly made in the USA. Features: Long Tube Header Design 1-3/4" Primary Tubes Smooth mandrel bends optimize exhaust flow Fully TIG welded for strength and beauty Built To Order in 4 Weeks TBSSY Emissions:This product is not legal for street use on an emissions-controlled vehicle. It may be used on dedicated competition or pre-pollution controlled vehicles only.