Flowmaster GM 1500 5.3L FlowFX Cat-Back For GM Silverado/Sierra (717858)

The Flowmaster FlowFX Cat-back exhaust system is a high-performance upgrade designed for the 2019-2026 GM Silverado and Sierra 1500 trucks equipped with the 5.3L engine. Constructed from durable 409S stainless steel, this system offers long-lasting reliability and resistance to corrosion. It features a 3.00-inch inlet pipe that leads into a Flow FX "straight-through" muffler, delivering an aggressive sound profile and optimized airflow for increased power. The system provides maximum dyno gains of 10 horsepower and 12 lb.ft of torque at the rear wheels, enhancing overall vehicle performance. The 3.00-inch mandrel-bent tailpipe exits behind the rear passenger side tire and is finished with a large 4.50-inch black ceramic coated stainless steel tip, adding a custom aesthetic that complements the deep, performance-oriented exhaust note. Designed for ease of installation, it utilizes all factory hanger locations and connections, with detailed instructions and hardware included.

This cat-back exhaust system is compatible with both 2- and 4-wheel drive models of the Silverado and Sierra 1500, with wheelbases of 148 or 157 inches. It is a direct bolt-on replacement for the factory exhaust, suitable for street and performance use. The system is ideal for owners seeking a combination of improved sound, increased horsepower, and a custom look. It is suitable for daily driving, performance upgrades, and enthusiasts looking to enhance their truck’s sound and performance without extensive modifications. The kit includes all necessary hardware and mounting components for straightforward installation at home, ensuring a hassle-free upgrade for your vehicle.