Description
Overview
The Flowmaster American Thunder Cat-back Exhaust System is a purpose-built, bolt-on upgrade engineered specifically for the 1987-1993 Ford Mustang LX equipped with the 5.0L engine. Designed to unleash that unmistakable Fox body attitude, this complete cat-back kit replaces the restrictive factory piping with free-flowing components that deliver a deep, powerful, and aggressive exhaust note without the guesswork of a custom build. It also fits 1986 Ford Mustang GT models with the 5.0L engine, and is compatible with both coupes and convertibles.
At the heart of the system sits a pair of Flowmaster’s legendary Super 44 Series mufflers, tuned to complement the iconic 5.0L rumble. Combined with 2.50-inch aluminized steel mandrel-bent inlet pipes and matching aluminized steel tailpipes, this system promotes smoother exhaust flow while producing the rich, aggressive tone that Mustang enthusiasts crave.
Key Benefits
Every element of this American Thunder system is built for a straightforward, satisfying install. The mandrel-bent inlet pipes maintain consistent diameter through every bend, while the use of factory hanger locations means the kit drops into place quickly and cleanly. U-bolt clamping and all necessary hardware are included, along with easy-to-follow instructions to get you from the garage to the open road with confidence.
To finish the look, the system is capped with a pair of long 2.50-inch 304 stainless steel tips that give your Mustang a genuine show-car appearance out back. With dual tailpipes and a silver pipe finish, this cat-back delivers both the sound and the visual presence to match the car’s classic Fox body character.
- Complete cat-back system with a pair of Super 44 Series mufflers included
- Free-flowing 2.50-inch aluminized steel mandrel-bent inlet pipes and aluminized steel tailpipes
- Long 2.50-inch 304 stainless steel exhaust tips for a polished, show-car look
- Bolt-on design that uses factory hanger locations for quick, easy installation
- U-bolt clamping type with all necessary hardware and instructions included
- Dual tailpipe configuration with an aggressive, deep sound level
Fitment
This American Thunder system is engineered for 1987-1993 Ford Mustang LX models with the 5.0L engine, and also fits 1986 Ford Mustang GT models with the 5.0L engine. It suits both coupes and convertibles, and is designed for 2WD applications. Please note that a heat shield is not included with this kit.
Emissions
Built as an emissions-legal, CARB (California) compliant system, this cat-back carries an emission code of 5 and is designed to keep your Mustang street-legal while delivering the performance sound you want. This product includes a California Proposition 65 warning.
