Flowmaster 817574 American Thunder Stainless Cat-Back Exhaust System 1986-2004 Ford Mustang GT, LX, Cobra


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

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

  • Fits with most modified suspensions
  • Stainless Steel Construction
  • Delta Flow Technology
  • Lifetime limited warranty
weight 28.65
length 49.5
width 14.9
height 10
Brand Flowmaster
California Proposition 65 Chemical Name Chromium (hexavalent compounds)
California Proposition 65 Required Yes
Color Black muffler, natural tubing
Emission Code 5
Exhaust Series American Thunder
Exit Position Dual Out Dumps
Heat Shield No
Inlet Diameter (in) 2.5
Material 409 Stainless Steel
Muffler Part Number Kit Only
Muffler Quantity 2
Muffler Series Super 44 Series
Outlet Diameter (in) 2.5
Product Type Exhaust System
Single Dual Dual
Sound Level Aggressive
System Type Cat-back
Tip Quantity Not Included
Tubing Diameter (in) 2.5
Warning California Proposition 65

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