The Flowmaster FlowFX DOS Cat-Back Exhaust System is a high-performance exhaust upgrade designed for 2011-2019 GM 2500HD and 3500HD trucks equipped with the 6.0-liter engine. Constructed entirely from durable 409 stainless steel, this system features mandrel-bent pipes ranging from 3.50 to 3.00 inches to optimize exhaust gas flow and improve engine efficiency. It exits with dual 4.00-inch black stainless steel tips, adding a stylish and aggressive appearance. The system provides maximum gains of 10 horsepower and 10 lb-ft of torque at the rear wheels compared to stock, enhancing overall vehicle performance. It utilizes all factory hanger locations and includes comprehensive installation instructions and hardware, allowing for straightforward, DIY installation. Backed by Flowmaster's Lifetime Limited Warranty, this exhaust system combines durability, style, and performance.
Designed specifically for extended cab or crew cab models with a 6.5-foot bed, this system fits 2011-2019 GM 2500HD and 3500HD trucks with the 6.0L engine. It serves as a direct bolt-on replacement for the factory exhaust, providing improved flow and sound without requiring modifications. Ideal for street driving and daily use, this exhaust system enhances engine performance and sound profile while maintaining factory fitment and hanger compatibility. The included hardware and instructions facilitate easy installation at home, making it a practical upgrade for truck enthusiasts seeking increased power and a custom look.
