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

Overview

This aggressive sounding system is designed to replace the original rear mounted mufflers located behind the rear axle. With easy fit in mind, the system is mandrel bent for maximum performance and includes specially selected mufflers to support the performance image of the car. As an America Thunder system, it delivers an aggressive exterior tone with moderate interior sound level that is suited to the enthusiast who wants their performance to be heard. Like all Flowmaster 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.

Features:

  • Mandrel bent 16 Gauge Tubing
  • Aggressive Sound exterior exhaust tone
  • Includes hangers and hardware for easy installation
  • Dyno tuned for maximum performance

Specs

2WD/4WD2WD
BrandFlowmaster
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
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 Systems / Kits
Single DualSingle
Sound LevelModerate Sound
System TypeAxle-back System
Tip Diameter (in)3.5
Tip Quantity1
Tubing Diameter (in)2.5
Part Number17421

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.

Tech Resources

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

Applications

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