Description
Overview
The Flowmaster Flow FX Cat-back Exhaust System is a complete bolt-on upgrade engineered specifically for 1999-2004 Jeep Grand Cherokee models equipped with the 4.0L or 4.7L engine. Built from durable 409 stainless steel and 16-gauge 2.50-inch mandrel-bent tubing, it replaces the restrictive factory piping behind the catalytic converter with a smooth, free-flowing path that helps your Grand Cherokee breathe better. If you want a proven exhaust that pairs added durability with a deeper, more purposeful tone, the Flow FX delivers.
Sound & Performance
At the heart of the system is the compact oval Flow FX performance muffler, a "straight-through" design that mounts behind the catalytic converter to reduce restriction while producing a moderate, deep, powerful sound. It stays refined enough for daily driving yet gives your Jeep an unmistakable presence. The muffler measures 20.00 inches in overall length with a center inlet, a 2.50-inch offset outlet, and a silver finish that matches the rest of the mandrel-bent tubing.
Built for the Trail
Because this is a Jeep built to work as hard as it plays, the mandrel-bent stainless tailpipe tucks up high into the undercarriage. That routing protects the pipe from being crushed when traversing rocky terrain, so your exhaust holds up to real off-road use. The single tailpipe configuration finishes with a 3.50-inch black ceramic coated 304 stainless steel tip embossed with the Flowmaster name for a clean, factory-plus look.
Key Highlights
- 409 stainless steel construction with 16-gauge 2.50-inch mandrel-bent tubing for durability and unrestricted flow
- Compact oval "straight-through" Flow FX performance muffler for a moderate, deep, powerful tone
- High-tuck stainless tailpipe protects against damage on rocky terrain
- 3.50-inch black ceramic coated 304 stainless steel embossed tip
- Mounts using factory hanger locations for a straightforward fit
- CARB (California) compliant, Emission Code 5
Installation & Fitment
Designed to use the factory hanger locations, the Flow FX installs without cutting or custom fabrication in most cases. The kit includes detailed instructions and all necessary hardware, making it a quick and easy job you can complete at home. Fitment covers all 1999-2004 Jeep Grand Cherokee models with the 4.0L or 4.7L engine, and the complete system is CARB (California) compliant with an Emission Code of 5.
Every Flow FX system is backed by Flowmaster’s Lifetime Limited Warranty, so you can upgrade your Grand Cherokee’s sound, flow, and durability with confidence.
