Durable Fully Welded 16ga Aluminized Steel. 3 Year Limited Warranty. Aggressive And Powerful Exterior Exhaust Tone. Notable Interior Resonance. Excellent Street/Strip And Off Road Application. No Internal Packing To Blowout. The Original Two Chamber Design. Premium Flowmaster Quality. Mild to stock exterior exhaust tone. Recommended For SUV/Trucks/Motorhomes/Tow Vehicles. Improved HP; TQ and Engine Efficiency.