Description
Overview
The Flowmaster Flow FX Cat-Back Exhaust System is engineered for truck owners who want a moderate-to-aggressive tone with all the performance benefits Flowmaster is known for. This complete cat-back kit fits 2014-2019* (*Classic body) Chevrolet Silverado 1500 and GMC Sierra 1500 Crew Cab and Double Cab models equipped with the 4.3L and 5.3L engines, delivering a deeper, more purposeful sound both inside and outside the cab.
At the heart of the system is a Flow FX straight-through performance muffler, built to maximize flow for stronger power delivery while producing the rich, aggressive note that defines the Flow FX series. The muffler features a center inlet, dual outlets, a 20-inch overall length, and 2.50-inch outlet diameter, all finished in a clean silver appearance to match the mandrel-bent tubing.
Key Benefits
Constructed from 409S stainless steel mandrel-bent tubing, this exhaust is designed to flow freely and resist corrosion for the long haul. The dual 2.50-inch tailpipes route the exhaust out in front of the rear passenger tire for that unmistakable muscle-truck stance, and they’re capped with large 4.00-inch black ceramic coated 304 stainless steel tips carrying a laser-etched logo for a factory-plus finished look.
- 409S stainless steel mandrel-bent tubing for maximum flow and durability
- Flow FX straight-through performance muffler for added power and a deep, aggressive sound
- Dual 2.50-inch tailpipes exiting in front of the rear passenger tire
- Large 4.00-inch black ceramic coated 304 stainless steel tips with laser logo
- Moderate-to-aggressive sound level, inside and out
- CARB (California) compliant with Emission Code 5
Installation & Fitment
Designed for a straightforward bolt-on install, the Flow FX system mounts using the factory hangers and includes all necessary parts, hardware, and detailed instructions to get you on the road quickly. There’s no need to modify your truck’s existing mounting points, making this an approachable upgrade for a driveway or shop installation alike.
This kit is purpose-built for the 2014-2019* Classic body Chevrolet Silverado 1500 and GMC Sierra 1500 Crew Cab and Double Cab trucks with the 4.3L or 5.3L engine. Please note a heat shield is not included with this system.
Whether you’re chasing a bolder exhaust note, improved flow, or a more aggressive rear-end appearance, the Flowmaster Flow FX Cat-Back Exhaust System delivers a proven combination of performance, sound, and street-ready style. WARNING: This product can expose you to chemicals known to the State of California to cause cancer or reproductive harm — see California Proposition 65.
