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Flowmaster FlowFX Dual Exit Cat-Back Exhaust System For 2019-2021 GM 1500 5.3L

Pricing: $638.95

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The new Flowmaster® FlowFX™ Cat-back exhaust system is designed for the 2019*-2021 GM Silverado/Sierra 1500 trucks (*new body style) with 5.3L engine and factory dual exhaust. This bolt-on system is manufactured using durable 409 stainless steel throughout and features a 3.00-inch inlet pipe leading to a single inlet/dual outlet FlowFX straight-through muffler for a deep, moderately aggressive sound and maximum performance. The dual 2.50-inch mandrel bent tailpipes are custom routed to clear the factory spare tire and tow hitch without any clearance issues and exit out through the factory exhaust bezels in the bumper, retaining the factory dual exhaust appearance. This system utilizes factory hanger locations, includes installation instructions, and all necessary hardware for an easy at home installation. Note: Fits 2WD and 4WD models.



  • Lifetime Limited Warranty
  • Easy at Home Installation
  • Includes All Necessary Hardware
  • Uses the Factory Hanger Locations
  • All Mandrel-bent Stainless Steel Tubing
  • Exits Through the Factory Exhaust Bezels
  • FlowFX "Straight-through" Performance Muffler
  • Deep Powerful Tone Inside and Outside the Vehicle



  • 2019-2021 GMC Sierra 1500 5.3L
  • 2019-2021 Chevrolet silverado 1500 5.3L



  • Direct Replacement
  • Does not fit crew cab 2WD with 2-piece driveshaft.
  • Does not fit 2019 LD/classic body style or trucks with factory single exhaust system.
  • This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations


  • 717894
  • 717894
  • Flowmaster
  • New


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  • Item Requires Shipping
  • FREE Ground Shipping

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