Description
Overview
The Flowmaster Flow FX Cat-Back Exhaust System is engineered to wake up the 2005-2019 Nissan Frontier equipped with the 4.0-liter V6 engine. Built from durable 409 stainless steel throughout, this complete cat-back kit replaces the restrictive factory piping with a free-flowing, better-breathing design that delivers real, measurable gains while giving your Frontier a custom look and a purposeful new voice.
At the heart of the system is the Flow FX “straight-through” muffler, a 24-inch center-inlet design tuned for a moderate sound level. That means you get an aggressive, performance-oriented tone under throttle without an overbearing drone during everyday driving, freeway cruising, or long-distance towing duty.
Performance You Can Measure
Dual 2.50-inch mandrel-bent pipes maintain smooth, consistent diameter through every bend to reduce turbulence and improve exhaust gas flow. On the dyno, this Flow FX system produced maximum increases of +8 horsepower and +6 lb-ft of torque at the rear wheels, adding usable pull where you feel it most. The result is a truck that breathes easier, sounds better, and performs stronger than stock.
Style and Fitment
The system exits out both sides, behind the rear wheels, finishing in dual 4.50-inch black ceramic tips with an embossed logo for a clean, aggressive appearance that stands out. Every component mounts to the existing factory hanger locations, so there is no cutting, welding, or custom fabrication required. Installation instructions and all necessary hardware are included, making this a straightforward project you can complete at home.
- Application: 2005-2019 Nissan Frontier with the 4.0L V6 engine
- Construction: durable 409 stainless steel throughout
- Piping: dual 2.50-inch mandrel-bent pipes for improved flow
- Muffler: Flow FX straight-through, center inlet, 24-inch overall length, moderate sound level
- Tips: dual 4.50-inch black ceramic tips with embossed logo
- Exit: dual, side-exit behind the rear wheels
- Mounting: uses all factory hanger locations for a bolt-on fit
- Verified gains: +8 hp and +6 lb-ft at the rear wheels
Confidence Built In
This Flow FX cat-back is CARB (California) compliant, making it a smart choice for emissions-conscious owners, and it carries an Emission Code of 5. The silver-finished muffler and piping are matched to the black ceramic tips for a factory-plus aesthetic that complements the truck rather than overpowering it. Backed by Flowmaster’s Lifetime Limited Warranty, this system is designed to deliver lasting durability, sound, and performance mile after mile.
Whether you drive your Frontier daily, tow on weekends, or head off the pavement, the Flowmaster Flow FX cat-back is a proven upgrade that combines stainless steel durability, easy at-home installation, and dyno-verified power in one complete package.
