The 0FG is a 3” T304L stainless steel Cat Back configuration featuring AWE’s patented drone-canceling 180 Technology®. Together, combined with precision fitment, class-leading rigidity, and tailored tip options for all bumper variations, you're looking at the Best Sounding Exhaust on the Planet™ for the 5.3L-equipped Silverado/Sierra. American-sourced T304L stainless steel with a wall thickness of .065” runs smoothly from front to back, connecting right after the factory emissions equipment. After exiting the 180 Technology® resonator, the 0FG exhaust brings up the rear to mate with the factory "HDMI" tips. AWE's No CEL Guarantee, Perfect Fitment Guarantee, and Lifetime Warranty come standard.