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Flowmaster Force II SS Cat-Back Exhaust for Chevy /GMC 2500 /3500HD GAS - 817640

Flowmaster Force II SS Cat-Back Exhaust for Chevy /GMC 2500 /3500HD GAS - 817640

Note 1: Extra Cab with a Standard Bed Only

Flowmaster Force II cat-back exhaust system for the 2011 to 2015 GM 2500HD and 3500HD extended cab and short bed truck is perfect for the person looking for mild to moderate sound levels with all of the performance benefits that you would expect from Flowmaster. This bolt on emissions legal system for the 6.0L V8 gasoline engines features a 50 Series Big Block muffler, mandrel bent 3.50 inch stainless steel tubing, and a polished 4.00 inch stainless steel tip with Flowmaster's logo embossed into it. The exhaust system is covered by Flowmaster's Lifetime Limited Warranty. Designed for an easy fit, this system includes all necessary parts and hardware for installation.

  • Stainless Steel Construction
  • Dyno Tuned For Maximum Performance
  • Patented Delta Flow Technology
  • Lifetime Limited Warranty


Fits 2011 to 2015 Chevrolet Silverado and GMC Sierra 2500 HD and 3500 HD Trucks with 6.0L V8 gasoline engines. Fits Extra Cab with a Standard Bed only

Flowmaster has its roots in solving the engine noise problems encountered by California racers in the 1980s. In 1983 Flowmaster's founder, Ray Flugger, created his first patented design of racing silencers, which dampened noise with minimal loss of power. Ray attached handles to ease carrying the square shaped race mufflers through the race pits, and the mufflers became known as the "suitcase mufflers". Today, the innovative Flowmaster mufflers are the result of years of development with top race engine builders, thousands of hours of dyno research and "real-world" on-track testing.

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