The Flowmaster Flow FX Direct-Fit Muffler is a performance exhaust system designed for the 2020-2026 GM 2500HD and 3500HD trucks equipped with the 6.6L gas engines. Constructed from durable 409 stainless steel, this system offers long-lasting performance and trouble-free service. It features a 3.50-inch inlet pipe that leads into a stainless steel Flow FX series "straight-through" muffler, providing a deep sound, maximum performance, and no drone. The system connects seamlessly to the factory tailpipe, delivering an effective upgrade that enhances sound and power. With dyno gains of up to 7 horsepower and 5 lb-ft of torque at the rear wheels, it improves acceleration and towing capabilities. The design utilizes all factory hanger locations and connections, allowing for straightforward installation at home. The kit includes detailed instructions and all necessary hardware, backed by Flowmaster's Lifetime Limited Warranty.
This direct-fit muffler system is compatible with both 2WD and 4WD models of the specified trucks, making it suitable for street performance, towing, and daily driving applications. It is tailored specifically for the 2020-2026 GM 2500HD and 3500HD with the 6.6L gas engines, serving as an easy upgrade for those seeking improved exhaust sound and performance. The installation involves replacing the factory muffler with this bolt-on system, ensuring a hassle-free process. Ideal for truck owners looking to enhance their vehicle’s sound and power, this system provides a reliable, high-quality performance upgrade that maintains factory connections and hanger points for a seamless fit.
