11-14 Ford F-150 3.5L EB V6 Flowmaster 817539 Force II Cat-back Exhaust System

Flowmaster Force II Cat-Back Exhaust System – Part #817539

The Flowmaster Force II Cat-Back Exhaust System (Part #817539) is engineered for 2011-2014 Ford F-150 trucks equipped with the 3.5L EcoBoost V6, delivering the perfect balance of enhanced performance, refined exhaust tone, and premium stainless steel durability. Designed for drivers seeking the classic appearance of a traditional dual exhaust without excessive interior drone, this premium exhaust system produces a moderate exterior sound with a moderate-to-mild interior tone. The system includes both dual rear exit and dual side exit tailpipe configurations, allowing the installation to be customized for everyday driving or towing applications. Featuring mandrel-bent stainless steel tubing and Flowmaster's high-performance Laminar Flow PRO Series muffler, this direct-fit cat-back system improves exhaust flow for better throttle response, increased horsepower potential, and improved fuel efficiency while utilizing factory mounting locations for a precise, hassle-free installation.

Key Features

• Flowmaster Force II Cat-Back Exhaust System
• Part Number: 817539
• Designed for 2011-2014 Ford F-150 3.5L EcoBoost V6 models
• Fits all wheelbase configurations
• Includes both dual rear exit and dual side exit tailpipes
• Dual side exit configuration is ideal for towing applications
• High-flow Laminar Flow PRO Series oval performance muffler
• Mandrel-bent 409 stainless steel tubing for maximum exhaust flow
• Polished 304 stainless steel exhaust tips with rolled angle-cut edges
• Moderate exterior exhaust tone with moderate-to-mild interior sound level
• Uses factory hanger locations for a direct-fit installation
• Includes all required clamps, hangers, mounting hardware, and installation components
• Performance-grade stainless steel construction for long service life

Benefits

• Improves exhaust flow for enhanced throttle response and overall engine performance.
• Helps unlock additional horsepower and torque throughout the RPM range.
• May contribute to improved fuel economy under normal driving conditions.
• Produces a refined performance exhaust note without excessive cabin resonance.
• Offers flexible exhaust exit options to match personal preference or towing needs.
• Direct-fit design eliminates unnecessary fabrication or welding for most installations.
• Constructed from corrosion-resistant stainless steel for long-lasting durability.
• Backed by Flowmaster's Lifetime Limited Warranty for added peace of mind.
  

Product Specifications

• Manufacturer: Flowmaster
• Part Number: 817539
• Product Type: Cat-Back Exhaust System
• Series: Force II
• Vehicle Application: 2011-2014 Ford F-150 3.5L EcoBoost
• Fits: All wheelbases
• Drive Compatibility: 2WD and 4WD
• Material: 409 Stainless Steel tubing and muffler body
• Exhaust Tip Material: 304 Stainless Steel
• Finish: Natural stainless steel tubing with black high-temperature painted muffler
• Pipe Color: Silver
• Exhaust Tip Finish: Polished
• Exhaust Tip Color: Silver
• Main Pipe Diameter: 2.50 inches
• Inlet Diameter: 3.00 inches
• Tailpipe Outlet Diameter: 2.50 inches
• Exhaust Tip Diameter: 3.00 inches
• Exhaust Tip Length: 13.00 inches
• Exhaust Tip Shape: Round
• Exhaust Tip Style: Rolled angle-cut, single wall
• Muffler Series: PRO Series
• Muffler Type: Absorption
• Muffler Shape: Oval
• Muffler Body Dimensions: 18.25 in. long x 10.00 in. wide x 5.00 in. high
• Exit Configuration: Dual Out Rear or Dual Out Side
• Sound Level: Moderate/Mild
• Clamps Included: Yes
• Hangers Included: Yes
• Mounting Hardware Included: Yes
• Catalytic Converter Included: No
• Installation Style: Factory mounting locations

Install Difficulty Level

Easy – Approximately 1 Hour. This direct-fit cat-back exhaust system is designed to install using the factory hanger locations and includes all required clamps, hangers, and hardware. No welding is typically required, making it an excellent upgrade for experienced DIY enthusiasts using basic hand tools.

Vehicle Fitment

Year: 2011-2014

Make: Ford

Model: F-150

Engine: 3.5L EcoBoost V6

Wheelbase: Fits all wheelbase configurations

Drive: 2WD and 4WD

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