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2009-13 GM Silverado/Sierra 1500 trucks, 5.3L - FlowFX Exhaust - 717929YouTube Button

Flowmaster FlowFX Cat-Back Exhaust System

2009-2013 GM Silverado/Sierra 1500 5.3L V8 FlowFX 3.0" to Dual 2.5" Cat-Back, Dual Side Exit, 409 Stainless Steel Exhaust System with Black Tips

PART# 717929

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The new Flowmaster® FlowFX® cat-back exhaust system for the 2009-2013 GM Silverado/Sierra 1500 trucks with the 5.3L engine is manufactured using durable 409 stainless steel throughout and features 3.0-inch to dual 2.50-inch mandrel bent pipes for better exhaust gas flow, and a FlowFX "straight-through" muffler for a great aggressive sound level and maximum performance. The system is finished off with dual 4.0-inch diameter black ceramic-coated 304S stainless steel Flowmaster logoed tips exiting in front of the rear tire, 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 installation instructions and all necessary hardware for an easy installation that you can do at home. Backed by Flowmaster's lifetime Limited Warranty.


  • Increases of up to 10 hp and 11 lb./ft. over the stock exhaust
  • 3.0-inch and 2.5-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
  • Includes two large 4.0-inch black ceramic coated tips with the Flowmaster logo on them, exit in front of the rear tire for an aggressive and stylish look
  • Includes complete hardware and factory styled hangers in the stock locations for an easy installation
  • FlowFX “straight through” performance muffler delivers a deep, aggressive performance tone and improves exhaust flow
  • Backed by Flowmaster’s Lifetime Limited Warranty


Emission Code5
Exhaust SeriesFlowFX
Exit PositionDual Out Same Side
Mount TypeUses Factory Hangers
Muffler Body Length (in)18
Muffler ColorNatural
Muffler FinishBrushed
Muffler Inlet Diameter3.00
Muffler Inlet LocationCentered
Muffler Material409S Stainless Steel
Muffler Outlet Diameter2.50
Muffler Outlet LocationDual Outlet
Muffler Overall Length (in)24
Muffler Part NumberKit Only
Muffler Quantity1
Muffler SeriesFlowFX
Muffler ShapeOval
Muffler TypeAbsorption
Product TypeExhaust System
Single DualDual
Sound LevelAggressive
System TypeCat-back
Tip CutAngle
Tip Diameter4.00
Tip Edge StyleCut
Tip FinishBlack Ceramic
Tip Length5.25
Tip LogoLaser
Tip Material304 Stainless
Tip Quantity2.00
Tip ShapeRound
Tip StyleDouble Wall
Tubing Diameter (in)2.50
Tubing Material409S Stainless Steel
California Proposition 65 RequiredYes
Part Number717929



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.

Tech Resources

Fits Crew Cab/Short Bed and Double Cab/Standard Bed Trucks with 143.5-inch Wheelbases Only


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