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2005-09 Ford Mustang 4.0L - American Thunder Exhaust System 17421YouTube Button

Flowmaster American Thunder Axle-back Exhaust System

2005-2009 Ford Mustang with V6 engine. Fits coupe and convertibles.

PART# 17421

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$313.00   Suggested Retail
$280.95   Your Price
Estimated shipping date: 11/30/2020
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Moderate sound

Overview

This American Thunder axle-back exhaust system is constructed from 16-gauge mandrel-bent aluminized steel and includes a pair of specially designed 60 Series™ performance muffler with the sound that goes hand in hand with the performance image of the Mustang. The muffler is finished off with large 4.00-inch polished stainless steel tips to fill out the exhaust cutouts in the rear valance for a muscular appearance that matches the sound. As an American Thunder® system, it delivers a moderate interior tone and exterior sound that is suited to the enthusiast who wants their performance to be heard. Like all Flowmaster® exhaust systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, the system includes all necessary parts and hardware for easy installation. Note: Fits both coupes and convertibles.

Features:

  • Includes Hangers and Hardware for an Easy Installation
  • Mandrel bent 16-gauge Aluminized Steel Tubing
  • Moderately Aggressive Exterior Exhaust Tone
  • Dyno Tuned for Maximum Performance
  • 4.00-inch Polished Stainless Steel Tip
  • Uses the Factory Hanger Locations
  • 60 Series Performance Muffler
  • Easy Installation

Specs

2WD/4WD2WD
BrandFlowmaster
ColorBlack
Emission Code5
Exhaust SeriesAmerican Thunder
Exit PositionSingle Rear Exit
Heat ShieldNo
Inlet Diameter (in)2.5
MaterialAluminized Steel
Muffler Part NumberKit Only
Muffler Quantity1
Muffler Series60 Series Delta Flow
Outlet Diameter (in)2.5
Product TypeExhaust System
Single DualSingle
Sound LevelModerate
System TypeAxle-back
Tip Diameter (in)3.5
Tip Quantity1
Tubing Diameter (in)2.5
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Part Number17421

Emissions

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.

Tech Resources

Fits 2005-2009 Ford Mustang with V6 engine, coupes and convertible models.

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