Flowmaster American Thunder Header-Back Exhaust For Chevy C10/20 Suburban (73-87) (17742)

The Flowmaster American Thunder Header-Back Exhaust System is a high-performance exhaust upgrade designed specifically for 1973-1974 Chevrolet and GMC C10 and C15 1/2 ton and 3/4 ton 2WD trucks. Constructed with mandrel-bent 2.50-inch aluminized steel tubing, this system features a built-in H-pipe crossover and Super 44 Series performance mufflers to deliver a moderate to aggressive sound profile both inside and outside the vehicle. It enhances engine performance, durability, and sound quality, making it an ideal choice for truck enthusiasts seeking a robust exhaust note and reliable construction. The system is engineered for easy installation, including all necessary hardware, and provides sufficient clearance for lowered vehicles, ensuring a seamless fit and long-lasting performance.

Designed for 1973-1974 Chevrolet and GMC trucks with either automatic or manual transmissions, this Crossmember-Back exhaust system is compatible with both long and short wheelbase models. It offers flexible tailpipe exit options—either dual outlets under the rear bumper for a muscular look or dual outlets behind the rear tires for a classic truck appearance. The system does not include exhaust tips, header reducer cones, or downpipes for factory manifolds, but it is a direct bolt-on upgrade that accommodates various chassis configurations. Suitable for street use and daily driving, this exhaust system provides a balanced blend of sound, performance, and durability.