Description
Overview
The Flowmaster Flow FX Direct Fit Muffler is engineered as a bolt-in exhaust upgrade for 2017-2020 Ford F-150 Raptor trucks equipped with the 3.5L EcoBoost engine. Built to replace the restrictive factory muffler, this Flow FX assembly delivers a deeper, more powerful exhaust note while keeping installation refreshingly simple. It’s a smart choice for Raptor owners who want a serious sound and performance boost without the headache of cutting or welding.
At its core is a specially designed “straight-through” Flow FX oval muffler featuring dual 3.00-inch inlets and dual 3.00-inch outlets. This straight-through architecture is mated to all 3.00-inch mandrel-bent stainless steel tubing, promoting smooth, unrestricted flow for maximum performance. The muffler body is constructed from durable 304 stainless steel, while the tubing is 409 stainless steel, giving you a corrosion-resistant, long-lasting system finished in a clean silver appearance.
Sound & Performance
Flow FX is tuned to produce a moderate-to-aggressive sound level, delivering a deep, powerful exhaust note both inside and outside the cab. It’s aggressive enough to announce your Raptor’s presence, yet refined enough to remain comfortable for daily driving. The 13.00-inch body and 56.00-inch overall length are dimensioned specifically for a true direct-fit application.
Easy, No-Cut Installation
This system is designed to utilize the factory hanger locations and OEM-style connections, so there’s no cutting and no welding required. Most installs can be completed in under 30 minutes, and everything you need comes in the box — including the necessary clamps, hardware, and easy-to-follow instructions. Note that a valve, heat shield, and catalytic converter are not included, and no separate muffler part number is required since this ships as a complete kit.
Highlights
- Direct-fit replacement muffler for 2017-2020 Ford F-150 Raptor with 3.5L EcoBoost
- Straight-through Flow FX oval muffler with dual 3.00-inch inlet and dual 3.00-inch outlet
- All 3.00-inch mandrel-bent stainless steel tubing (409 stainless) with 304 stainless muffler body
- Moderate-to-aggressive interior and exterior sound with a deep, powerful tone
- Uses factory hanger locations — no cutting or welding, installs in under 30 minutes
- Includes clamps, hardware, and easy-to-follow instructions
For Raptor owners chasing a bolder exhaust note and improved flow with minimal effort, the Flowmaster Flow FX Direct Fit Muffler delivers proven straight-through performance in a genuine bolt-on package. This product carries a California Proposition 65 warning.
