Flowmaster American Thunder Cat-back Exhaust System

1986-1993 Ford Mustang LX 5.0L engine and 1986 Mustang GT with 5.0L engine.

PART# 17113

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$484.95   Suggested Retail
$392.36   Holleydays Price
Estimated shipping date: 12/30/2019
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Fits 1986-1993 Ford Mustang LX with 5.0L engine and 1986 Mustang GT with 5.0L engine.


Our American Thunder® exhaust system for 1986-1993 Ford Mustang LX and 1986 GT models with the 5.0L engine is a bolt-on emissions legal system featuring free-flowing 2.50-inch aluminized steel mandrel-bent inlet pipes, aluminized steel tailpipes and uses the factory hanger locations for quick and easy installation. This Flowmaster® exhaust system features a pair of Super 44™ Series mufflers that complements that iconic deep and powerful Fox body 5.0L engine and the system uses the factory hanger locations for a quick and easy installation. Includes all necessary hardware and easy to follow instructions. Note: Fits coupes and convertibles. Also fits 1986 Ford Mustang GT models with 5.0L engine.


  • Includes Hangers and Hardware for an Easy Installation
  • Mandrel-bent 16 Gauge Aluminized Steel Tubing
  • Dyno-tuned for Maximum Pperformance
  • Uses the Factory Hanger Locations
  • Moderate Exterior Exhaust Tone


California Proposition 65 RequiredNo
Emission Code5
Exhaust SeriesAmerican Thunder
Exit PositionDual Out Rear
Heat ShieldNo
Inlet Diameter (in)2.5
MaterialAluminized Steel
Muffler Part NumberKit Only
Muffler Quantity2
Muffler SeriesSuper 44 Series
Outlet Diameter (in)2.5
Product TypeExhaust System
Single DualDual
Sound LevelAggressive Sound
System TypeCat-back
Tip QuantityNot Included
Tubing Diameter (in)2.5
Part Number17113


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 1986-1993 Ford Mustang LX with 5.0L engine and 1986 Mustang GT with 5.0L engine.



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    Some parts are not legal for use in California or other states with similar regulations.

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