Flowmaster American Thunder Header-Back Exhaust System

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  • Mandrel-bent tubing
  • 16-gauge
  • High quality
  • Easy to instal

If you’re looking for that complete head-back dual exhaust system that will give you an aggressive tone, the Flowmaster American Thunder is an ideal choice. You are guaranteed that you will get maximum performance out of this.

This exhaust system kit is made with performance in mind. It is designed to boost horsepower, torque, and throttle response. Thus, it will also help with your fuel efficiency.

Thanks to its mandrel-bent tubing, it guarantees maximum flow. It also uses the latest exhaust technology that will bring to you the power that you seek.

The American Thunder is what started it all. If you’re looking for the original tone by Flowmaster, this is exactly what you need. The interior and exterior tune that you will get out of this is so moderate yet aggressive that you will feel more confident on the road.

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Lifetime Limited Warranty applies to Flowmaster all stainless steel exhaust systems.

Three (3) Year Limited Warranty applies to Flowmaster aluminized steel exhaust systems.

The following part numbers are available in this product line:
17104 17119 17120 17129 17139 17149 17200 17201 17202 17289 17382 17654 17742 817104 817129 817139 817158 817174 817200 817202 817273 817281 817282 817390 817409 817412 817457 817571 817585 817654
To purchase this product for your vehicle, please select the Year, Make and Model of your vehicle at the top of this page.

Buick (1964-1974)

Apollo, Gran Sport, GS, GS 350, GS 400, GS 455, Skylark, Special

Chevrolet (1955-1988)

Bel Air, C10 Pickup, C20, C20 Pickup, Camaro, Chevelle, Chevy II, El Camino, Malibu, Monte Carlo, Nova, One-Fifty Series, R20, Two-Ten Series

Dodge (1968-1974)

Charger, Coronet, Dart

Ford (1964-1970)

Fairlane, Mustang

GMC (1967-1986)

C15/C1500 Pickup, C25, C25/C2500 Pickup, C2500, Sprint

Oldsmobile (1964-1974)

442, Cutlass, Cutlass Supreme, F85, Omega, Vista Cruiser

Plymouth (1967-1974)

Belvedere, Duster, GTX, Road Runner, Satellite, Scamp, Valiant

Pontiac (1963-1974)

Firebird, Grand Prix, GTO, LeMans, Tempest, Ventura