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Vehicle Info NeededFLOWMASTERPART NUMBER: 389-717972
FlowFX Extreme Series Cat-Back Exhaust System Fits Select Toyota 4Runner 4.0L
$41595
Ships on 09/08/2026
Lowest Price GuaranteeToyota
FlowFX Extreme Series Cat-Back Exhaust SystemFits Select Toyota 4Runner 4.0L 409 Stainless Steel 3 in. Tubing Underbody Dump Style Exhaust Sold as a Kit
Flowmaster 717972 FlowFX Extreme Series Cat-Back Exhaust System Features:
- Powerful sound and performance
- Dump style exhaust tip after the muffler eliminates over-the-axle routing
- Greatly improves ground clearance and departure angle for serious off-roading
- Attaches with included hardware to factory hangar locations for easy install
- Mandrel-bent 16-gauge stainless steel tubing
- Gains of 4 HP and 5 ft.-lbs. torque at the rear wheels
Emissions: 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.
Part TypeExhaust System
BrandFLOWMASTER
Package Height10.0
Package Width15.5
Package Length50.0
Weight26.5 PG
Muffler Body Diameter6 in.
Outlet Quantity1
Muffler Inlet Inside Diameter3 in.
Hangers IncludedYes
Main Piping Diameter3 in.
Tail Pipe QuantitySingle
Inlet TypeFlanged
Inlet Size (In.)3
Exhaust Tip Material409 Stainless Steel
Oxygen Sensor PortNo
Catalytic Converter Quantity0
Exit LocationUnderbody
Muffler Count1
Inlet Quantity1
Muffler Body Length14 in.
Sound LevelAggressive
Muffler Body Material409 Stainless Steel
UniversalNo
Hanger IncludedYes
Exhaust Tip CutStraight
Gasket Or Seal IncludedNo
Exhaust Tip IntercooledNo
Pipe ColorSilver
System FinishNatural
Muffler Quantity1
Muffler Inlet Outside Diameter3.13 in.
Exit QuantityOne
Muffler Flanged OutletNo
Exhaust Tip ResonatedNo
Catalytic Converter IncludedNo
Part CategoryPerformance Parts
Hardware IncludedYes
Exhaust Tip WallSingle Wall
Exhaust Tip Quantity1
Muffler Inlet LocationCenter
Exhaust Tip FinishNatural
Exhaust Tip EdgeRolled Edge
Valve IncludedNo
Muffler TypeAbsorption
Pipe Material409 Stainless Steel
Tail Pipe Tapered OutletNo
Gauge16
Muffler Body ShapeRound
Mounting Bracket IncludedNo
Muffler Outlet Quantity1
Muffler FinishNatural
Mount TypeUses Factory Hangers
Clamps IncludedYes
Muffler StyleAbsorption
FinishNatural
Exit StyleSingle Out Dump
Tip IncludedNo
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 Diameter3 in.
Muffler ConfigurationCenter/Center
Clamp Count1
System Material409 Stainless Steel
Valve TypeNot Applicable
Exhaust Tip Diameter3 in.
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
