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Vehicle Info NeededFLOWMASTERPART NUMBER: 389-717929
FlowFX Cat-Back Exhaust System 2009-2013 GM Silverado/Sierra 1500 5.3L V8
$74995
Ships on 09/08/2026
Lowest Price GuaranteeGM Trucks
FlowFX Cat-Back Exhaust System2009-2013 GM Silverado/Sierra 1500 5.3L V8 3 in. to Dual 2.500 in. Tubing Dual 4 in. Black Ceramic Tips Dual Side Exit Flow FX Series Muffler 409 Stainless Steel
Features:
- +10 horsepower (HP) / +11 ft.-lbs. torque (TQ)
- 16-gauge 409 stainless steel mandrel-bent tubing
- The straight-through performance muffler delivers a deep, moderate tone
- Exits in front of the rear tire for an aggressive appearance
- Utilizes all existing factory hanger locations for installation
Fitment Note:
- Fits crew cab/short bed and double cab/standard bed models with 143.500 in. wheelbases only
Emissions: This part is legal for sale or uses 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.
Part TypeExhaust System
BrandFLOWMASTER
Package Height1.0
Package Width20.5
Package Length40.7
Weight40.7 PG
Tailpipe Diameter (In.)2.5
Tip Diameter4 in (101.6 mm)
Muffler Inlet Inside Diameter3 in.
Hangers IncludedYes
Main Piping Diameter2.50 in.
Tail Pipe QuantityDual
Inlet TypeClamp-On
Inlet Size (In.)3
Tip CutAngle
Exhaust Tip Material304 Stainless Steel
Catalytic Converter Quantity0
Exit LocationDual side
Tip FinishBlack ceramic coated
Muffler Body Length18 in.
Sound LevelAggressive
Muffler Body Material409 Stainless Steel
Exhaust Tip CutAngled
Gasket Or Seal IncludedNo
Exhaust Tip IntercooledNo
Pipe ColorSilver
System FinishNatural
Muffler Quantity1
Muffler Inlet Outside Diameter3.50 in.
Exit QuantityDual
Muffler Flanged OutletNo
Tip Quantity2
Exhaust Tip ResonatedNo
Muffler Outlet LocationDual
Catalytic Converter IncludedNo
Catalytic Converter(S) IncludedNo
Part CategoryPerformance Parts
Hardware IncludedYes
Exhaust Tip WallDouble Wall
Exhaust Tip Quantity2
Muffler Inlet LocationCenter
Exhaust Tip FinishBlack Ceramic Coating
Exhaust Tip EdgeAngle Cut
Valve IncludedNo
Muffler TypeAbsorption
Pipe Material409 Stainless Steel
Muffler Body Width9 in.
Tail Pipe Tapered OutletNo
Gauge16
Muffler Body ShapeOval
Mounting Bracket IncludedYes
Muffler Outlet Quantity2
Muffler FinishNatural
Mount TypeUses Factory Hangers
Clamps IncludedYes
Muffler StyleFlowmaster FlowFX
Horse Power Increase10 HP
FinishNatural
Exit StyleDual Out Same Side
Muffler Body Height4 in.
Tip IncludedYes
Clamping TypeFlat Band
Muffler Flanged InletNo
Mandrel-BentYes
Spring Bolt Kit IncludedNo
Muffler SeriesFlow FX
QuantitySold as a kit
Muffler IncludedYes
Exhaust Tip ConnectionWelded
System StyleCat-back
Tail Pipe Outlet Outside Diameter2.50 in.
Muffler ConfigurationSingle inlet/Dual outlet
System Material409S Stainless Steel
Valve TypeNot Applicable
Tip ShapeRound
Exhaust Tip Diameter4 in.
Part FitmentDirect Fit
Package Qty1
Package TypeEA
No Questions
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Some parts are not legal for use in California or other states with similar laws / regulations
