This Stainless Works catback exhaust features 3 ½” CNC bent 304 stainless steel. It fits 2006+ 5.3L and 6.0L Trailblazers. This system uses a LMF straight through muffler that sounds awesome and is a bit more aggressive than the turbo muffler offered in our other exhaust. This muffler supports in excess of 600 HP! Comes with a 3 ½” mirror polished, angle cut tip that perfectly fits the rear valance. Includes all instructions, clamps, and accessories needed for installation. Very easy to install! The hardest part of the installation is removing the stock exhaust.