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Flowmaster Exhaust Systems Part #817478 Customer Reviews

Average Rating

17 Customer Reviews

Robert 2 guns

Reviewed by Robert S (Troy, OH) Reviewed for a 2014 Ford F-150 — Feb 09, 2017 5:58 AM

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I installed this system as per the video. I used a floor jack & jack stands instead of a lift The only complaint is the clamps to secure the exhaust pipes to the muffler.I had to use an impact 1/2 in air gun to secure the clamps to all the connections. Outside that ,this system sounds AWESOME . P.S. I`m 73 years old and I consider my self still a motor head. Respectfully.

Garbage Hardware

Reviewed by James T (CLAYTON, NC) Reviewed for a 2013 Ford F-150 — Dec 23, 2016 3:22 AM

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Great sound and good looking. What should have been a simple installation was greatly complicated by clamps and bolts that do not work. If you buy one of these, trash the hardware, buy good muffler clamps and tip bolts, and avoid the aggravation and trips to the auto parts and hardware stores., Disappointed that Flowmaster allowed a defect such as this.


Reviewed by Scott P (SANDWICH, IL) — May 17, 2016 3:26 AM

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Looks and sounds great!!! Everything you need for installation in kit GREAT!!!!!


Reviewed by Richard F (Clendenin, WV) Reviewed for a 2014 Ford F-150 — Feb 11, 2016 8:00 AM

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Sounds great!!!!!


Reviewed by collin e (geneva, NY) Reviewed for a 2010 Ford F-150 — Dec 24, 2015 5:19 AM

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I got this exhaust at a great deal! Got it installed, comes with nice clamps. Went together easy and sounds nice. Has a aggressive tone when you want it.


Reviewed by James T (Cumberland, MD) Reviewed for a 2012 Ford F-150 — Apr 07, 2015 4:30 AM

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Good system well designed but tips are poor quality with poor mounting hardware. Ended up welding on.

A good low growl.

Reviewed by Scotty B (HOUSTON, TX) Reviewed for a 2014 Ford F-150 — Apr 05, 2015 12:03 AM

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This 50 series has a nice low growl at idle and low rpms. It flattens out when throttle is open. Nice and quiet when cruising. I would like for everything to be the same but have a little more and deeper growl when at high rpms. Install wasn't hard but things didn't fit perfect. And for a "oem" fit, not satisfied. The driver side dual keeps slipping causing the tailpipe to fall. Had to install additional hanger. All connections have small air leaks when revved high. Had to jb weld. Hope it holds

Exhaust has the tone/sound and looks I was looking for.

Reviewed by Michael S (Gardner, KS) Reviewed for a 2014 Ford F-150 — Dec 28, 2014 7:29 AM

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The sound while cruising is not overbearing. Any time you accelerate the sound increases and you have a more performance sounding exhaust which is something I was looking for. The overall sound is more fitting for a Ford Coyote 5.0. engine. My only wish is that the rear hangers were located a little further back toward the tailpipes. My exhaust exits under the rear bumper not the side exits behind the rear tires. This design produces a lot of (what appears to be) unsupported exhaust pipe.

Great sound and looks.

Reviewed by Steve W (Crossville, TN) Reviewed for a 2010 Ford F-150 — Dec 21, 2014 5:08 AM

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Just the sound I was looking for. The pipes arrived quick and I had them installed by a local shop. They have that nice rumble, but are fairly quiet cruising down the highway. I've seen about a 1mpg increase in my fuel mileage.

Love the sound.

Reviewed by Gregory G (Allison Park, PA) Reviewed for a 2010 Ford F-150 — May 11, 2014 6:17 AM

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2 of 2 people found the following review helpful.

I wanted a little rumble from my truck, but not too loud to wake the neighbors. The exhaust note is perfect for my taste. I have also noticed a slight increase in gas mileage. I have the 5.4 liter V-8 and after installation I went to pick up my daughter from college. I put the cruise control on at 70 mph and got 19 mpg, up from 18 mpg. Installation was relatively easy and took me about 2.5 hours. Overall I am very pleased with this product.

Flowmaster Exhaust Systems - 817478

Cat Back Exhaust - Force II Series
  • $255.97 - $1,557.97
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  • Style:
    Dual rear/dual side exit (409 Stainless)
  • Part #:
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