Product Summary

Cat-Back Exhaust System Type, Moderate Sound Level

    Key Specs

    MFG. Part #717924
    Exhaust System TypeCat-Back
    Single or DualSingle | Dual Exit
    Exhaust Tubing Diameter3 Inch

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    Flowmaster 717924 Details

    This FlowFX cat-back exhaust system is for 1999-2007* (*Classic body) GM Silverado/Sierra 1500 with either a 4.3L, 4.8L or 5.3L engine and 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 great sound and maximum performance. The dual 2.50-inch mandrel-bent tailpipes exit out the side at an angle behind the rear wheels directing exhaust away from your boat or travel trailer when towing. The system is finished off with a pair of large 4.50-inch diameter black ceramic coated 304S stainless steel tips, giving your truck a custom look that goes hand in hand with that deep performance FlowFX sound. The system uses all the existing factory hanger locations and includes an additional hanger to install the new left side tailpipe. Includes installation instructions and all necessary hardware for an easy installation that you can do at home.


    • Increases of up to 8 hp and 7 lb/ft of torque over the stock exhaust
    • System produces a nice rumble with minimal interior resonance
    • Large 4.50-inch black ceramic coated stainless steel tips offers an aggressive look
    • Includes complete hardware and factory styled hangers in stock locations for an easy installation
    • FlowFX "straight-through" performance muffler delivers a deep tone and improved exhaust flow
    • Mandrel-bent 16-gauge 409 stainless steel tubing maximizes exhaust flow with excellent corrosion resistance
    • Clears the factory spare tire
    • Lifetime Limited Warranty


    Flowmaster 717924 Specifications

    MFG. Part #717924
    Exhaust System TypeCat-Back
    Single or DualSingle | Dual Exit
    Exhaust Tubing Diameter3 Inch
    Exhaust ExitDual Split Side
    Sound LevelModerate
    Muffler(s) IncludedYes
    Muffler Quantity1
    Muffler ConnectionsSingle Inlet | Dual Outlet
    Muffler TypeAbsorption
    Exhaust Tip IncludedYes
    Exhaust Tip Quantity2
    Exhaust Tip ShapeRound
    Exhaust Tip CutAngle
    Exhaust Tip Edge StyleRolled Edge
    Exhaust Tip Size4.50"
    Exhaust System Material409 Stainless Steel
    Exhaust System FinishNatural
    Muffler Body ShapeOval
    Muffler SeriesFlow FX
    Muffler Inlet Diameter3"
    Muffler Outlet Diameter2.5"
    Muffler Overall Length24"
    Muffler Body Length18"
    Muffler Material409 Stainless Steel
    Muffler FinishBrushed
    Muffler ColorNatural
    Exhaust Tip Material304 Stainless Steel
    Exhaust Tip FinishBlack Coated
    Intermediate Pipe Diameter3"
    Tailpipe Diameter2.5"
    Mandrel BentYes
    Catalytic Converter(s) IncludedNo
    Hardware IncludedYes
    Sold in QuantityKit
    GTIN Code700042039531
    NotesFits 1999-2007 classic body GM 1500 trucks with 143.5 inch wheelbase
    Exit LocationSide