American Thunder Cat-Back Exhaust System 1999-2007* (*Classic Body Only) Chevrolet Silverado/Gmc Sierra 1500 With 4.3L, 4.8L, 5.3L Engines Aluminized Steel Aggressive To Moderate Sound Flowmaster

The Flowmaster American Thunder Exhaust System (Part #: 17435) is designed to boost your truck's sound and performance. It produces a moderate-aggressive exhaust tone with the classic Flowmaster sound. Each system features large-diameter, mandrel-bent piping, high-flow mufflers, and minimal restriction for dyno-proven performance increases. These systems are available in durable aluminized steel or premium stainless steel for excellent corrosion resistance. Most systems require zero welding, offering a simple, bolt-on installation with standard hand tools. Each kit includes vehicle-specific tubing, mufflers, clamps, hangers, exhaust tips, and all necessary hardware.