Flowmaster introduces our Flow FX stainless steel cat-back exhaust system for the 2021-2025 Ford F-150 trucks with the 2.7, 3.5, and 5.0-liter engines. This system uses a Flow FX series muffler for an aggressive to moderate sound level and increased performance. 3.00-inch to dual 2.50-inch mandrel bent 409 stainless steel tubing allows for maximum exhaust flow and durability. The system uses dual 4.00-inch black ceramic-coated tips for a custom look. Max dyno gains of 9 hp and 10 lb-ft at the rear wheels. All of the necessary hardware is included, and factory-mounting locations are used for an easy installation. Backed by Flowmaster's Lifetime Limited Warranty. Features & Benefits FlowFX Series performance muffler offers an aggressive to moderate sound level and increased performance 409 stainless steel construction delivers extra durability and improved long-term corrosion resistance Max dyno gains of 9 hp and 10 lb-ft at the rear wheels 3.00-inch 16-gauge mandrel bent stainless steel tubing helps maintain maximum exhaust flow for better power Includes all necessary hardware for an at home installation Dual 4.00-inch black ceramic-coated tips add a custom look Uses factory hanger locations for easy installation Lifetime Limited Warranty