Description
Overview
The Flowmaster Flow FX Cat-Back Exhaust System is a complete, performance-driven upgrade for 2014-2019 GM Silverado and Sierra trucks equipped with the 4.3L and 5.3L engines. Engineered as a direct cat-back replacement, it swaps out restrictive factory piping for a free-flowing design that delivers a deeper performance tone and a cleaner, more aggressive look out back. Built from durable 409S stainless steel, this system is designed for years of trouble-free service in demanding conditions.
At the heart of the system is the Flow FX “straight-through” muffler, tuned for a moderate sound level that adds genuine attitude without droning inside the cab. Paired with a 3.00-inch inlet pipe and a single 3.00-inch mandrel-bent tailpipe, the Flow FX design keeps exhaust flow smooth and consistent for maximum performance from your GM V8 or V6.
Key Benefits
Every detail is built around easy ownership and a factory-plus finish. The single tailpipe exits behind the rear passenger-side tire and is capped with a large 4.50-inch black ceramic-coated 304S stainless steel tip featuring an embossed logo, giving your Silverado or Sierra that custom look that matches its deeper voice. Because the system uses all of the factory hanger locations and connections, installation is straightforward enough to complete at home.
- Manufactured from 409S stainless steel for long-lasting corrosion resistance and durability
- Flow FX straight-through muffler delivers a moderate, deep performance sound
- 3.00-inch inlet pipe and 3.00-inch mandrel-bent single tailpipe for smooth, unrestricted flow
- Large 4.50-inch black ceramic-coated 304S stainless steel tip with embossed logo
- Bolts to all factory hanger locations and connections for an easy at-home install
- CARB (California) compliant with a silver pipe finish
Fitment
This Flow FX cat-back system is designed for 2014-2019 GM Silverado and Sierra models with 4.3L and 5.3L engines, fitting both 2-wheel-drive and 4-wheel-drive trucks with 143.5-inch and 153-inch wheelbases. Note that classic body 5.3L applications apply to 4wd models with a 143.5-inch wheelbase. Always confirm your specific configuration before ordering.
What’s Included
The system arrives complete with the Flow FX muffler, tailpipe, and finished tip, along with all necessary hardware and detailed installation instructions to make the job simple. From the moment you fire it up, you’ll hear the difference the Flow FX muffler makes, and the black ceramic-coated tip finishes the look for a custom appearance right out of the box. This is a CARB-compliant, emissions-code 5 system, making it a smart choice for owners in California and beyond who want performance sound without compromise.
