Description
Overview
The Flowmaster Flow FX Cat-Back Exhaust System is engineered to give the 2006-2008 Dodge Ram 1500 with the 5.7-liter Hemi V8 a more assertive voice and freer-breathing performance. Built from durable 409 stainless steel throughout, this complete cat-back kit replaces the restrictive factory piping with 3.00-inch tubing that transitions to dual 2.50-inch mandrel-bent pipes, smoothing the path for exhaust gases and helping your Hemi make the most of every combustion cycle.
At the heart of the system is a Flow FX “straight-through” muffler, a 24.00-inch straight-through design with a center inlet and dual 2.50-inch outlets. This muffler is what delivers the Flow FX signature: an aggressive-to-moderate sound level that comes alive under throttle without droning on the highway. Flowmaster’s own dyno testing revealed maximum gains of +8 horsepower and +11 lb-ft of torque at the rear wheels, so the added attitude comes with real, measurable performance.
Style and Fitment
The system exits out both sides behind the rear wheels in a true dual configuration, finished with 4.50-inch black ceramic tips carrying an embossed logo for a custom, factory-plus look. The silver pipes and silver muffler keep everything cohesive underneath, while the black tips add a bold finishing touch at the bumper.
Installation is designed to be a straightforward at-home job. The kit uses all existing factory hanger locations for a bolt-on fit, and it ships with detailed installation instructions plus all necessary hardware so you have everything you need to complete the swap. There is no cutting of factory hangers or fabrication required to hang this system correctly.
Key Highlights
- Direct cat-back fit for 2006-2008 Dodge Ram 1500 trucks with the 5.7L Hemi engine
- Constructed from durable 409 stainless steel throughout for long service life
- 3.00-inch to dual 2.50-inch mandrel-bent tubing for improved exhaust gas flow
- Flow FX straight-through muffler (24.00-inch, center inlet, dual 2.50-inch outlets) for an aggressive-to-moderate tone
- Dyno-verified maximum gains of +8 hp and +11 lb-ft at the rear wheels
- Dual side exit behind the rear wheels with 4.50-inch black ceramic embossed-logo tips
- Uses factory hanger locations; includes instructions and all mounting hardware
Compliance and Warranty
This Flow FX system is CARB (California) compliant, making it a legal choice for emissions-conscious owners, and it carries a California Proposition 65 warning. Backed by Flowmaster’s Lifetime Limited Warranty, it’s a confidence-inspiring upgrade for Ram 1500 owners who want more sound, more flow, and a cleaner custom appearance without sacrificing daily drivability.
