Description
Overview
The Flowmaster Signature Series Cat-back Exhaust System Kit is engineered for Chevrolet Silverado and GMC Sierra trucks running the 4.3L and 5.3L engines. Built for owners who want a deeper, more aggressive tone without droning excess, this cat-back exhaust system pairs a proven straight-through muffler with mandrel-bent tubing to unlock airflow, sound, and street-tough looks. Fitment covers 2014-2019 GM Silverado/Sierra applications (Classic body 5.3L, 4WD with 143.5-inch wheelbase noted), and the system works with both 2WD and 4WD models on 143.5-inch and 153-inch wheelbases.
Every component is manufactured from brushed 304 stainless steel for years of trouble-free service and high-end good looks. The kit is TIG welded for stronger, more precise joints that look as good as the system sounds, making it a performance exhaust upgrade you can be proud to show off underneath your truck.
Key Benefits
At the heart of the system is a 3.00-inch inlet pipe that feeds a TIG welded 304 stainless steel Signature Series “straight-through” muffler, delivering a moderate, deep performance sound alongside maximum flow. A single 3.00-inch mandrel-bent tailpipe exits behind the rear passenger-side tire and is capped with a large 4.50-inch diameter PVD coated black chrome 304S stainless steel tip, giving your Silverado or Sierra a custom finished appearance. On the dyno, this exhaust system produced max gains of 9 horsepower and 10 lb-ft of torque at the rear wheels.
- Cat-back design with a Signature Series straight-through muffler included for a deep, moderate tone
- Brushed 304 stainless steel construction, fully TIG welded for strength and finish
- 3.00-inch inlet and 3.00-inch mandrel-bent single tailpipe for improved flow
- Large 4.50-inch PVD coated black chrome 304S stainless steel exhaust tip
- Dyno-proven gains up to 9 hp and 10 lb-ft at the rear wheels
- CARB (California) compliant, Emission Code 5
Easy, At-Home Installation
This exhaust system uses all factory hanger locations and connections, so no cutting or fabrication is required. It installs using the factory mount points, making it an approachable weekend project for the home mechanic. The kit includes installation instructions and the necessary hardware to get the job done.
Fitment
Designed for 2014-2019 GM Silverado/Sierra trucks with 4.3L and 5.3L engines, in both 2WD and 4WD configurations with 143.5-inch and 153-inch wheelbases. Please verify your exact model and wheelbase before purchase. When you shop for exhaust upgrades for your Chevrolet or GMC pickup, this Flowmaster Signature Series cat-back exhaust delivers the sound, flow, and finish that serious truck owners expect from a name in performance exhaust.
