Flowmaster 21-25 Ford F150 2.7L/3.5L/5.0L American Thunder Cat-Back Exhaust System

Flowmaster introduces our new American Thunder stainless steel cat-back exhaust system for the 2021-2026 Ford F-150 with the 2.7L, 3.5L and 5.0L engines. This system uses a Super 40 series muffler for a deep powerful sound and increased performance. Maximum dyno gains of 11 HP and 10 LB.FT. at the rear wheels. Mandrel bent 409 stainless steel tubing is used for maximum exhaust flow and durability. The system has a 3.0-inch inlet pipe and dual 2.5-inch tailpipes with both side exit and rear exit options that allow you to customize the look of the kit. 3.5-inch polished stainless steel tips finish off the kit for a classic performance look. All of the necessary hardware is included and factory-mounting locations are used for an easy installation. Backed by Flowmaster's Lifetime Limited Warranty. Fits 2021-2026 Ford F-150 2.7L, 3.5L, 5.0L. American Thunder, Cat-Back, Dual Exit Stainless Steel Exhaust System 2021-2026 Ford f-150 Trucks with 2.7L, 3.5L Ecoboost, 3.5L Ti-VCT and 5.0L engines. Fits 2 & 4-wheel drive. Does not fit regular cab with 6.5' bed. Does not fit hybrid Powerboost models. Does not fit models with OEM active exhaust option.

• Super 40 Series Performance Muffler Delivers a Deep and Aggressive Performance Tone
• Includes Both Rear and Side Exit Tailpipes so the Final Look can be Customized
• 3.50-Inch Polished Stainless Steel Tips add a Classic Performance Look
• Delta Flow Technology Increases Performance and Reduces Drone
• Maximum Dyno Gains of 11 HP and 10 LB.FT. at the Rear Wheels
• Uses the Factory Hanger Locations for an Easy Installation
• Stainless Steel Construction adds Durability
• Mandrel-bent Tubing Maximizes Exhaust Flow
• Clears the Factory Spare Tire
• Lifetime Limited Warranty

Upgrade the sound and performance of your 2021-2026 Ford F-150 with the Flowmaster American Thunder cat-back exhaust system, Part Number flo817979. Designed for trucks equipped with the 2.7L EcoBoost, 3.5L EcoBoost, 3.5L Ti-VCT, or 5.0L engines, this dual-exit system uses a Super 40 Series muffler to produce a deep, aggressive performance tone while supporting improved exhaust flow. Dyno testing shows maximum gains of up to 11 horsepower and 10 lb.-ft. of torque at the rear wheels.
Constructed from durable mandrel-bent 409 stainless steel tubing, the system features a 3-inch inlet and dual 2.5-inch tailpipes. Included rear- and side-exit tailpipes let you customize the appearance and outlet placement of your truck. Polished 3.5-inch stainless steel tips complete the classic performance styling. Delta Flow technology helps increase performance while reducing unwanted interior drone, making the system suitable for both daily driving and performance applications.
The Flowmaster American Thunder exhaust system is engineered to use factory hanger locations for a straightforward installation and includes the required mounting hardware. It clears the factory spare tire and is compatible with two-wheel-drive and four-wheel-drive 2021-2026 Ford F-150 models. This system does not fit regular cab trucks with a 6.5-foot bed, hybrid PowerBoost models, or vehicles equipped with the factory active exhaust option. Backed by Flowmaster's Lifetime Limited Warranty. This product may require emissions compliance verification before installation and is subject to applicable California regulations.

Features:

• Super 40 Series performance muffler delivers a deep, aggressive exhaust tone

• Dual rear- and side-exit tailpipes provide customizable outlet styling

• Polished 3.5-inch stainless steel tips add a classic performance appearance

• Delta Flow technology increases performance and helps reduce exhaust drone

• Maximum dyno gains of up to 11 horsepower and 10 lb.-ft. of torque at the rear wheels

• Mandrel-bent 409 stainless steel tubing maximizes exhaust flow and durability

• Factory hanger locations support a straightforward installation

• Clears the factory spare tire

• Fits 2021-2026 Ford F-150 models with 2.7L, 3.5L, and 5.0L engines

• Backed by Flowmaster's Lifetime Limited Warranty

Fitment:
Ford F-150 King Ranch 2021
Ford F-150 King Ranch 2022
Ford F-150 King Ranch 2023
Ford F-150 King Ranch 2024
Ford F-150 King Ranch 2025
Ford F-150 King Ranch 2026
Ford F-150 Lariat 2021
Ford F-150 Lariat 2022
Ford F-150 Lariat 2023
Ford F-150 Lariat 2024
Ford F-150 Lariat 2025
Ford F-150 Lariat 2026
Ford F-150 Limited 2021
Ford F-150 Limited 2022
Ford F-150 Limited 2023
Ford F-150 Platinum 2021
Ford F-150 Platinum 2022
Ford F-150 Platinum 2023
Ford F-150 Platinum 2024
Ford F-150 Platinum 2025
Ford F-150 Platinum 2026
Ford F-150 Police Responder 2021
Ford F-150 Police Responder 2022
Ford F-150 Police Responder 2023
Ford F-150 Police Responder 2024
Ford F-150 Police Responder 2025
Ford F-150 Police Responder 2026
Ford F-150 SSV 2021
Ford F-150 SSV 2022
Ford F-150 SSV 2023
Ford F-150 SSV 2024
Ford F-150 SSV 2025
Ford F-150 SSV 2026
Ford F-150 STX 2024
Ford F-150 STX 2025
Ford F-150 STX 2026
Ford F-150 Tremor 2021
Ford F-150 Tremor 2022
Ford F-150 Tremor 2023
Ford F-150 Tremor 2024
Ford F-150 Tremor 2025
Ford F-150 Tremor 2026
Ford F-150 XL 2021
Ford F-150 XL 2022
Ford F-150 XL 2023
Ford F-150 XL 2024
Ford F-150 XL 2025
Ford F-150 XL 2026
Ford F-150 XLT 2021
Ford F-150 XLT 2022
Ford F-150 XLT 2023
Ford F-150 XLT 2024
Ford F-150 XLT 2025
Ford F-150 XLT 2026