ARH Full Exhaust System for Chevy SSPrimary sizes available are 1 7 8" or 2" with 3" collectors followed by a 3" X pipe system that extends back to the factory (or aftermarket) axleback mufflers. The system is 100% US made and 304 S S throughout. With high quality hardware included, expect a great fit and easy installation as always on ARH systems. To complete the kit or if you just want to dramatically improve appearance and sound, we also offer our direct fit quad tip Pure Thunder