Flowmaster 717894 Flow FX Cat-Back System for 19-24 GM 1500 truck w/5.3L


  • $745.16
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Fits 2019*-2024 (*New body) Chevrolet Silverado 1500/GMC Sierra 1500 Crew Cab/Double Cab models with 5.3L engine and factory dual tailpipes. - Aggressive to moderate sound

This Flowmaster® Flow FX™ Cat-back exhaust system is designed for the 2019*-2024 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 Flow FX straight-through muffler for a deep, moderately aggressive sound and maximum performance. Maximum dyno gains of 21 hp and 26 lb.ft at the rear wheels. 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.


  • Deep Powerful Tone Inside and Outside the Vehicle
  • Max Dyno Gains of 21 hp and 26 lb.ft. of Torque
  • FlowFX "Straight-through" Performance Muffler
  • Exits Through the Factory Exhaust Bezels
  • All Mandrel-bent Stainless Steel Tubing
  • Uses the Factory Hanger Locations
  • Includes All Necessary Hardware
  • Easy at Home Installation
  • Lifetime Limited Warranty
Brand Flowmaster
Catalytic Converter Included No
Emission Code 5
Exhaust Series FlowFX
Exit Position Dual Out Rear
Heat Shield No
Material 409 Stainless Steel
Mount Type Uses Factory Hangers
Muffler Body Length (in) 18
Muffler Color Natural
Muffler Finish Brushed
Muffler Inlet Diameter (in) 3
Muffler Inlet Location Centered
Muffler Material 409S Stainless Steel
Muffler Outlet Diameter (in) 2.5
Muffler Outlet Location Dual Outlet
Muffler Overall Length (in) 24
Muffler Part Number Kit Only
Muffler Quantity 1
Muffler Series FlowFX
Muffler Shape Oval
Muffler Type Absorption
Product Type Exhaust System
Single Dual Dual
Sound Level Aggressive / Moderate
System Type Cat-back
Tubing Diameter (in) 2.5
Tubing Material 409S Stainless Steel
UPC 700042038916
California Proposition 65 Chemical Name Chromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 Chemical Name 1 Nickel (metallic)
California Proposition 65 Chemical Name 2 Chromium (hexavalent compounds)
California Proposition 65 Required Yes
Part Number 717894

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