Description
Overview
The Flowmaster Flow FX Extreme Cat-Back Exhaust System is engineered for the 2006-2008 Dodge RAM 1500 equipped with the 5.7-liter engine, delivering a proven blend of increased performance, durable construction, and a bold exhaust note. Built around Flowmaster’s Flow FX series muffler, this cat-back system transforms both the sound and the flow of your truck while using factory-mounting locations for a straightforward installation.
Constructed from 3.00-inch mandrel bent 409 stainless steel tubing, the Flow FX Extreme is designed to maximize exhaust flow and stand up to the demands of daily driving and off-road use. The mandrel bends maintain consistent pipe diameter through every turn, helping exhaust gases move freely for the performance gains you expect from a quality cat-back upgrade.
Performance and Sound
On the dyno, this system delivered max gains of 8 horsepower and 11 lb-ft of torque at the rear wheels, giving your 5.7L RAM 1500 a real, measurable boost. The Flow FX series muffler produces an aggressive to moderate sound level, so you get a deep, assertive tone under throttle without sacrificing everyday drivability. The silver-finished muffler and silver pipe color keep the look clean and functional beneath the truck.
Extreme-Ready Design
What sets the Extreme apart is its turndown style, dump exit positioned right after the muffler. By eliminating the over-axle tailpipe entirely, the system improves ground clearance and departure angle — a meaningful advantage when you push your RAM into more extreme off-road situations. This single tail pipe configuration exits with a 3.00-inch center outlet from a muffler measuring 40.20 inches in overall length.
Key Highlights
- 3.00-inch mandrel bent 409 stainless steel tubing for maximum flow and durability
- Flow FX series muffler with an aggressive to moderate sound level
- Dyno-proven max gains of 8 hp and 11 lb-ft of torque at the rear wheels
- Turndown dump exit eliminates the over-axle tailpipe to improve ground clearance and departure angle
- Uses factory hangers and mounting locations with all necessary hardware included
- CARB (California) compliant — Emission Code 5
Fitment and Installation
This cat-back system is designed specifically for 2006-2008 Dodge RAM 1500 trucks with the 5.7-liter engine. Because it uses factory hangers and mounting locations and includes all of the necessary hardware, installation is designed to be direct and hassle-free. The complete kit includes the Flow FX muffler, so you have everything needed to complete the upgrade in one package. Backed by Flowmaster’s Lifetime Limited Warranty for lasting confidence. Note: This product carries a California Proposition 65 warning.
