Description
Overview
The Flowmaster® Outlaw® Cat-back Exhaust System is built for drivers who want their truck to be heard. Engineered for the 2019 (new body style) through 2026 GM Silverado/Sierra 1500 with the 5.3L engine, this Outlaw Series kit delivers maximum sound levels both inside and outside the cab for anyone who isn’t afraid of getting attention. It pairs a stainless steel Super 10™ Series muffler with all mandrel-bent 3.00-inch stainless steel tubing to move air freely, unlock power, and create a deep, aggressive tone that announces every throttle input.
This is a true bolt-on system that mounts to the factory hanger locations, making it a genuine at-home install. Every kit ships with detailed installation instructions and all the necessary hardware, so you can upgrade your Silverado or Sierra in your own garage without cutting or fabricating.
Key Benefits
Flowmaster’s Super 10 Series muffler is the heart of this system, delivering the loudest, most aggressive sound in the Flowmaster lineup. The large dual 3.00-inch stainless tailpipes maximize power and produce a deep, powerful exhaust note, with maximum dyno gains of 10 hp and 13 lb.-ft. measured at the rear wheels. The system is finished with a pair of large 4.00-inch double-wall, black ceramic-coated stainless tips featuring an embossed Flowmaster logo for a custom, purpose-built look.
- Stainless steel Super 10™ Series muffler for an aggressive, attention-grabbing sound level
- Mandrel-bent 3.00-inch stainless steel tubing with dual 3.00-inch stainless tailpipes
- Large 4.00-inch double-wall black ceramic-coated stainless tips with embossed logo
- Uses factory hanger locations for a bolt-on, at-home installation
- Includes installation instructions and all necessary hardware
- Maximum dyno gains of 10 hp and 13 lb.-ft. at the rear wheels
Choose Your Exit Configuration
Select the tailpipe exit that fits how you drive. Choose dual out the rear for a classic look, or dual out the sides behind the rear wheels — an ideal setup for towing that keeps exhaust from blowing onto your boat or trailer. Both configurations feature the same center-inlet, dual-outlet 10 Series muffler measuring 12.00 inches overall with a 3.00-inch outlet diameter.
Fitment
This system is designed for a perfect fit on 2019 (new body style) to 2026 GM Silverado/Sierra 1500 trucks equipped with the 5.3L engine. It fits Crew Cab and Double Cab models with a factory single tailpipe only. The Outlaw system is emissions-legal and CARB (California) compliant, so it’s a responsible choice for a serious sound upgrade. Please note this product carries a California Proposition 65 warning.
