09-10 Ford F-150 4.6L & 5.4L / 11-14 Ford F-150 5.0L V8 Flowmaster 817478 Force II Cat-back Exhaust System

Flowmaster 817478 Force II Cat-back Exhaust System

The Flowmaster Force II Cat-back Exhaust System is designed for 2009-2014 Ford F-150 trucks equipped with 4.6L, 5.0L, or 5.4L engines. This performance exhaust system delivers a refined moderate exterior exhaust tone with a comfortable interior sound level, making it an excellent choice for truck owners who want improved exhaust flow, enhanced styling, and a classic Flowmaster sound without excessive cabin noise. The bolt-on design uses factory hanger locations and includes the required hangers and hardware for a straightforward installation. Featuring a Super 50 Series chambered muffler, mandrel-bent stainless steel tubing, and dual polished exhaust tips, this cat-back system provides improved exhaust performance while maintaining daily driving comfort. The system offers two tailpipe exit options, including dual rear exit for a bold appearance or dual side exit behind the rear wheels for towing applications.

Key Features

• Complete cat-back exhaust system engineered specifically for 2009-2014 Ford F-150 trucks.
• Super 50 Series chambered performance muffler provides a moderate exhaust tone.
• Mandrel-bent 16-gauge 409 stainless steel tubing improves exhaust flow and durability.
• 3.00-inch inlet tubing supports strong exhaust performance.
• Dual 2.50-inch mandrel-bent tailpipes provide balanced exhaust flow.
• Large 3.50-inch polished 304 stainless steel exhaust tips enhance appearance.
• Dual rear exit and dual side exit configurations provide styling and towing flexibility.
• Designed to clear the factory spare tire.
• Uses factory hanger locations for a clean installation.
• Dyno tuned for performance and sound quality.

Benefits

• Improves the appearance of the Ford F-150 with a premium dual exhaust look.
• Provides a deeper, more aggressive exhaust note while maintaining comfortable interior sound levels.
• Enhances exhaust flow for improved performance characteristics.
• Offers durable stainless steel construction designed for long-term reliability.
• Includes installation hardware and hangers for a convenient bolt-on upgrade.
• Covered by Flowmaster’s Lifetime Limited Warranty for added confidence and protection.

Product Specifications

• Brand: Flowmaster
• Part Number: 817478
• Product Type: Cat-back Exhaust System
• Exhaust Series: Force II
• Sound Level: Moderate
• Material: 409 Stainless Steel tubing and muffler body
• Exhaust Tip Material: 304 Stainless Steel
• Exhaust Tip Finish: Polished
• Exhaust Tip Color: Silver
• Exhaust Tip Size: 3.50-inch round angle-cut tips
• Main Pipe Diameter: 3.00 inches
• Tail Pipe Diameter: 2.50 inches
• Muffler Series: Super 50 Series
• Muffler Type: Chambered
• Muffler Body Dimensions: 17.25 inches length x 10 inches width x 5 inches height
• Muffler Finish: Black high-temperature paint finish
• Exit Style: Dual rear exit or dual side exit
• Drive Compatibility: 2WD and 4WD
• Catalytic Converter Included: No
• Clamps Included: Yes
• Hangers Included: Yes
• CARB Status: California compliant

Install Difficulty level

This Flowmaster Force II Cat-back Exhaust System is designed for an easy bolt-on installation using factory mounting locations, included hangers, and supplied hardware. Installation can typically be completed with basic hand tools, and the shortest referenced installation time is approximately 1 hour.

Vehicle Fitment

• 2009-2010 Ford F-150 with 4.6L engine
• 2011-2014 Ford F-150 with 5.0L engine
• 2009-2010 Ford F-150 with 5.4L engine
• Fits 2-wheel drive and 4-wheel drive models
• Fits all wheelbases

For questions about this product or to report product description inaccuracies, contact the MPT Performance experts at (407) 636-7077 or by email.