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Take a look at the new product designed by Flowmaster engineers. This is the FlowFX Direct-Fit Gray Exhaust Muffler Kit with Active Valve. The system allows the driver to redirect the exhaust flow with a push of a button canceling the muffler in mere seconds.

The muffler and the pipes are made from high-quality 409 stainless steel which means you won’t have to worry about rust or other types of corrosion. The kit will surely serve you the lifetime of your truck. The kit is designed as a direct replacement for a factory-installed muffler with all the necessary hardware included. The pipes are mandrel bent, which minimizes restrictions to the gasses flow thus increasing the useful power of the engine. Maximum gains in horsepower and torque are 9 hp and 11 lb. ft. of torque respectively.

Flowmaster® - FlowFX 409 SS Oval Direct-Fit Gray Exhaust Muffler Kit with Active Valve

Fits: 2019-2021 Chevy Silverado 1500 / GMC Sierra 1500


Muffler Series: FlowFX
Inlet - Outlet Configuration: Offset Inlet - Dual Outlet
Muffler Body Material: 409 SS
Muffler Body Finish: Gray
Muffler Inlet Diameter: 3"
Muffler Outlet Diameter: 3"
Muffler Body Shape: Oval
Muffler Sound: Aggressive / Loud
Tips Included: Yes


  • Deep Performance Tone from FlowFX Muffler
  • Very Aggressive Active By-Pass Tone
  • Wireless Controlled Actuator Motor
  • Direct-fit Replacement Muffler
  • Featuring W.A.V.E. Technology
  • Includes a High Quality Valve
  • Stainless Steel Construction
  • Includes Two Key Fobs

Get more information about the new Flowmaster product here.
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