Upgrade your 2014-2019 GM Silverado or GMC Sierra 1500 with the Flowmaster Outlaw Extreme Cat-Back Exhaust System, part number 817916. Designed for 4.3L and 5.3L engines, this system delivers an aggressive, deep exhaust tone for drivers who want a more pronounced sound inside and outside the truck. It is compatible with 2WD and 4WD models using 143.5-inch or 153-inch wheelbases and is intended for Classic body trucks. It does not fit 2019 new-body trucks.
The system features a 3-inch race-proven Outlaw muffler and a single 3-inch dump-style turndown exit positioned under the bed. Mandrel-bent 409 stainless steel tubing provides durable construction and consistent exhaust flow, while the factory hanger locations support a straightforward installation. All required hardware and detailed instructions are included, allowing installation in less than an hour with the appropriate tools.
Flowmaster engineered the Outlaw Extreme system for maximum sound intensity and a distinctive performance-oriented exhaust note. Its stainless steel construction is backed by a lifetime limited warranty, providing long-term durability for street-driven trucks and extreme-use applications. Verify vehicle year, body style, engine, and wheelbase before ordering. This product may require emissions compliance verification before installation or use, depending on local regulations.
Features:





