Description
Overview
The Flowmaster Flow FX Cat-Back Exhaust System is engineered specifically for the 1987-1993 Ford Mustang GT equipped with the 5.0L engine. Built to upgrade the factory exhaust with a proven combination of durable materials and free-flowing design, this complete cat-back kit replaces the restrictive stock piping and swaps in Flowmaster’s straight-through Flow FX performance mufflers for a stronger, more purposeful exhaust note and improved flow.
Construction & Performance
Every component is crafted from 409 stainless steel for long-lasting corrosion resistance and durability. The system uses 16-gauge, 2.5-inch mandrel-bent tubing, which maintains a smooth, consistent inner diameter through every bend to promote unrestricted exhaust flow. The dual tailpipes exit in the stock location behind the rear valance, preserving the factory look while delivering a genuine performance upgrade under the car.
Sound Character
At the heart of the kit are Flowmaster’s stainless straight-through Flow FX mufflers, tuned to produce a moderate yet deep and powerful tone outside the vehicle. Inside the cabin, interior sound is kept very mild, so you get an aggressive presence when you want it without excessive drone on the highway. Each muffler measures 34.50 inches in overall length with a 2.50-inch offset inlet and a 2.50-inch outlet, finished in silver to match the silver piping.
Fitment & Installation
This system is a direct fit for the 1987-1993 Ford Mustang GT 5.0L. It mounts using the factory hanger locations, so no cutting or custom fabrication is required. Detailed instructions and all necessary hardware are included, making this a quick and straightforward installation you can complete at home with basic tools. The kit is CARB (California) compliant with an Emission Code of 5, making it a smart choice for emissions-conscious enthusiasts.
Highlights
- 409 stainless steel construction for added durability and corrosion resistance
- 16-gauge 2.5-inch mandrel-bent tubing for unrestricted exhaust flow
- Straight-through Flow FX mufflers with a moderate, deep, and powerful sound and very mild interior tone
- Dual tailpipes that exit in the factory location behind the rear valance
- Uses factory hanger locations with all hardware and detailed instructions included
- CARB (California) compliant and backed by Flowmaster’s Lifetime Limited Warranty
Please note that exhaust tips are sold separately, and no heat shield is included with this kit. This product carries a California Proposition 65 warning. For Mustang GT owners looking to unlock a bolt-on flow and sound upgrade with trusted Flowmaster engineering, the Flow FX cat-back system delivers a durable, great-sounding, and easy-to-install solution.
