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Exhaust Exhaust Pipes, Systems and Components

Flowmaster

Force Ii Cat-Back Exhaust System 2011-2014 Ford F-150 With 3.5L Ecoboost, Fits All Wheelbases Moderate To Mild Sound Flowmaster

$1,383.95 $1,299.95 Save $84.00

SKU: F00L 817539

In Stock
In Stock
Ships by Sep 13
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The Flowmaster 817539 Force II Cat Back Exhaust System is a stainless steel exhaust system for 2011-2014 Ford F-150 3.5L EcoBoost trucks, featuring a PRO series muffler and dual 3-inch polished tips.
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Part #: 817539

For the person who wants the look of a traditional dual exhaust system with all the benefits that a Flowmaster Cat-back exhaust system provides, our Force II systems are the perfect choice. This system includes tailpipes for both dual out the rear and dual out the side (recommended for towing applications) so you can choose the one that fits your lifestyle. Force II systems deliver a moderate exterior tone and moderate to mild interior tone, and are suited to customers looking for efficiency improvements without a lot of noise. This system includes a specially designed stainless steel PRO series oval case muffler, all mandrel-bent stainless steel tubing and uses the factory hanger locations for an easy hassle free installation you can do at home. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, this system includes all necessary parts and hardware for easy installation.

Features:

  • Mandrel Bent 16ga 409 Stainless Tubing
  • Includes Hangers and Hardware for an Easy Installation
  • Limited Lifetime Warranty
  • Laminar Flow PRO Series Performance Muffler
  • Mild to Moderate Exterior Exhaust Tone
  • Moderate to Mild Exterior Exhaust Tone
  • Incl. Hangers and Hardware For Easy Installation
  • Uses the Factory Hanger Locations
  • Connects After Factory Catalytic Converter
  • Constructed from Stainless Steel
  • Dual Out Rear Exit
  • Lifetime Limited Warranty
  • Dyno Tuned for Maximum Performance
  • Easy Installation
  • Premium Flowmaster Quality

Force II Cat Back System | Single | Dual Rear Same Side Exit | Incl. 2.5 in. Tubing/Pro Series (TM) Mufflers/3in. Polished Stainless Tips | 409 Stainless Steel

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandFlowmaster
Part NumberF00L 817539

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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