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Flowmaster

Flowmaster 717864 FlowFX Cat-Back Exhaust Kit 3 Inch 409 Stainless Steel 4.5 Inch Black Ceramic Coated 304 Stainless Steel Tip Compatible with 2009-2014 Ford F-150 3.5L Ecoboost 4.6L 5.0L 5.4L

Based on 41 reviews
Condition: New
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$603.44

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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Nov 20
Order within 11 hours and 12 minutes

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At a glance

Condition
New
Weight
43.5 lb
Color
Multicolor
Material
Plastic
Automotive Fit Type
Vehicle Specific Fit
Item Type Name
Exhaust System
In the box
Exhaust System

Features 8

  • Large 4.50-Inch Black Ceramic Coated Stainless Steel Tips
  • Deep Powerful Tone Inside and Outside the Vehicle
  • Flow FX "Straight-through" Performance Muffler
  • Mandrel-bent Stainless Steel Tubing

Specs 18

Color Multicolor
Brand Flowmaster
Material Plastic
Automotive Fit Type Vehicle Specific Fit
Number of Items 1
Brand Name Flowmaster
Manufacturer Part Number 717864
Manufacturer Flowmaster

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Nov 20

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

Was exactly what I wanted
Was everything you would expect from Flowmaster I put the kid on and used it all four seasons before riding the review. It sounded good was loud but good sounding it did not rust or fall apart.
Reviewed in the United States on October 10, 2026 by Timothy Catlin
Amazing all around
It’s amazing, it’s the right balance of muscle and daily use. Definitely worth the money if you get it. It is a plug and play. Absolutely no drilling. You get at least 5-15 extra mpg on gas. (This was for me at least). stainless steel so great durability and no rust from my knowledge. I took a trip from Idaho to Seattle and it was nice a quiet while I was in 6th gear. You could hear it but if you turn on your cabin fan to 1, you’ll probably won’t hear it anymore. ... show more
Reviewed in the United States on November 18, 2025 by E-man Gonz
Great quality exhaust system with less sound dampening than expected
Review Image by Ryan K
Bought this for my 2010 5.4 after the factory muffler finally gave up. Love the quality of the kit, and the install was dead simple. Took me less than 30 minutes and everything fit perfectly into the factory exhaust hangers. Dropping a star because the exhaust tone is definitely not “mellow.” It’s acceptable at idle, but drones annoyingly loud in the cab at about 1800 rpm with any load on the engine. Fine at highway speeds until you hit a hill or need to pass and suddenly can’t hear your music anymore. That said, does sound amazing at WOT, and I did notice an improvement in mpg. ... show more
Reviewed in the United States on May 26, 2026 by Ryan K
Good for the money
Good exhaust, not nearly as loud as my Roush exhaust that I had to replace, sounds good on 5.0, waste on v6 for sound. I did spray hi temp paint on all so hopefully lasts a bit longer than the other. Will fit all cab/box sizes for same year.
Reviewed in the United States on November 15, 2025 by Robert
Flowmaster FX exhaust not mellow sound
Install was straight forward, relatively easy. My only dislike is that the exhaust is loud. The reviews all said it had a mellow tone. Well not mine, there is zero baffles in the muffler. Shame on me for not looking further into it before ordering. Truck is actually louder than before install and there are no leaks now. ... show more
Reviewed in the United States on February 18, 2026 by Ronni Ettline
No mods required for installation.
Easy install no torch required for install. All hardware was included to complete the job for my truck. The sound is mellow. Not too loud, unless you stomp on the gas and let her wind up. Makes the old Coyote nice and throaty sounding when the cam phasers kick in. Recommended over more expensive brands, way cheaper than oem. ... show more
Reviewed in the United States on May 30, 2025 by NY411
Missing parts
Kit was missing the first section of exhaust pipe but I was in a pinch and forced to install what was provided. All parts were scratched and some dented.
Reviewed in the United States on November 25, 2025 by Carrie
Love that exhaust note!
This was one of the best exhaust kits I've ever worked with. Everything went together as shown, all the factory hangers were there and fit the stock locations, and I was done in a couple of hours! Highly recommend this kit from Flowmaster!
Reviewed in the United States on December 12, 2024 by Timeless
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