For Rio Catback Exhaust System With Dual 2.5" Rolled Muffler Tip Made of High Quality T-304 stainless Stee. Clamp-On style TIG welded CNC machine flange for resistance against pressure and corrosion Aggressive deep and smooth tone sound while ensures smooth exhaust gas flow Increase engine output and efficiency Muffler Exhaust Tips: Dual 2.5" Rolled Mufller Tip