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Flowmaster

Flowmaster American Thunder Cat-back Exhaust System

1986-2004 Ford Mustang GT, LX, & Cobra with 4.6L and 5.0L engines. Fits coupes and convertibles

Part # 817574 Be the first to write a review
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Delta Flow
Flowmaster's race-inspired American Thunder® Extreme Cat-back system is designed to mount behind the factory catalytic converters, or most original style aftermarket H-pipes. The turn-down tailpipes drop at the rear of the transmission and eliminates full length tailpipes to maximize the sound level and allow for extra clearance for wide tires and modified suspensions. These systems are mandrel bent for maximum performance and include Super 44 series mufflers. This American Thunder Extreme system delivers a super aggressive interior and exterior tone and is suited to the enthusiast who wants the most aggressive components they can purchase. Like all Flowmaster systems, the benefits include improved throttle response and power. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation. Notes: Fits coupes and convertibles

Features:

  • Fits with most modified suspensions
  • Stainless Steel Construction
  • Delta Flow Technology
  • 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.

2WD/4WD2WD
Brand Flowmaster
ColorBlack muffler, natural tubing
Emission Code5
Exhaust SeriesAmerican Thunder
Exit PositionDual Out Dumps
Heat ShieldNo
Inlet Diameter (in)2.5
Material409 Stainless Steel
Muffler Part NumberKit Only
Muffler Quantity2
Muffler SeriesSuper 44 Series
Outlet Diameter (in)2.5
Product TypeExhaust System
Single DualDual
Sound LevelAggressive
System TypeCat-back
Tip QuantityNot Included
Tubing Diameter (in)2.5
UPC700042026531
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Part Number817574
5

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 1986-2004 Ford Mustang GT, LX, & Cobra models with 4.6L and 5.0L engines. Fits coupes and convertibles
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