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Flowmaster American Thunder Cat-back Exhaust System

1998-2011 Ford Ranger, 1998-2009 Mazda B3000/B4000 extended cab trucks with 3.0L or 4.0L engine.

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This Flowmaster® American Thunder® exhaust system is for 1998-2011 Ford Ranger and 1998-2009 Mazda B3000/B4000 extended cab (2-door) trucks with the 3.0L or 4.0L engines. The system includes a stainless steel mandrel-bent 2.5-inch flanged inlet pipe flowing into a single inlet, dual outlet Super 50™ series muffler with dual 2.5-inch mandrel-bent tailpipes exiting out the back. The tailpipes are finished off with a pair of large 3.00-inch polished 304 stainless steel tips. The dual outlet system will generally produce a moderate sound level that will appeal to most enthusiast type owners. The exhaust system is backed by our Limited Lifetime Warranty and includes all necessary parts, hardware and installation instructions. Note: Fits both 2/4 wheel drive models.


  • Includes Hangers and Hardware for an Easy Installation
  • Mandrel-bent 16 Gauge Stainless Steel Tubing
  • Connects After Factory Catalytic Converter
  • Super 50 Series Performance Muffler
  • Moderate Exterior Exhaust Tone
  • Lifetime Limited Warranty

About Flowmaster

Flowmaster® is a household name, and for good reason. They've built legendary exhaust systems and mufflers for decades, and now offer performance air intakes, catalytic converters, and headers to give your hot rod performance to match the iconic Flowmaster sound.

Brand Flowmaster
Emission Code5
Exhaust SeriesAmerican Thunder
Exit PositionDual Out Rear
Heat ShieldNo
Inlet Diameter (in)2.5
Material409 Stainless Steel
Muffler Part NumberKit Only
Muffler Quantity1
Muffler SeriesSuper 50 Series
Outlet Diameter (in)2.5
Product TypeExhaust System
Single DualDual
Sound LevelModerate
System TypeCat-back
Tip Diameter (in)3
Tip Quantity2
Tubing Diameter (in)2.5
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Part Number817529

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.

Fits 1998-2011 Ford Ranger and 1998-2009 Mazda B3000/B4000 extended cab trucks with the 3.0L or 4.0L engine. Does Not fit the Edge or Sport models.

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