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Flowmaster Exhaust Systems Part #817688 Customer Reviews

Average Rating

12 Customer Reviews

Cheap clamps

Reviewed by Antone M (middletown, RI) Reviewed for a 2011 GMC Sierra — May 25, 2017 4:27 PM

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Good system, downfall clamps don't seal and no converter clamp . For that money through the clamp in !!

Looks great once you get it installed

Reviewed by Chris D (Bloomington, IL) Reviewed for a 2012 Chevy Silverado — Apr 07, 2017 9:07 PM

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I'm pretty happy with it. You can find cheaper products, but this looks and sounds pretty good. I think it was worth the extra. My only complaint was the installation. The old came off easy, the new parts went on great. The spring clamps are junk. I couldn't get most of them tightened down enough to hold the pipes together. Ended up breaking off bolts on 4 of them. Eventually bought some standard muffler clamps and everything tightened up like it should.


Reviewed by Duane V (Washington, ME) Reviewed for a 2012 Chevy Silverado — Dec 20, 2016 3:05 AM

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this is exactly what i was looking for. it was easy to install. great value and it sounds just like i had hoped. it gives my truck that "animal growl" when i get into it. i would recommend this exhaust to anyone looking to up the performance of their vehicle.


Reviewed by Russell H (MERIDIAN, ID) Reviewed for a 2011 GMC Sierra — Aug 25, 2016 4:02 PM

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Great system. Had it welded on for max performance would suggest to do this as well. You don't have to though

Excellent Purchase!

Reviewed by Chad C (CRESTLINE, OH) Reviewed for a 2012 Chevy Silverado — Jun 30, 2015 3:54 AM

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Very happy with the look of this exhaust system and it sounds even better!

Great Sounding Exhaust!

Reviewed by Jason J (Tolleson, AZ) Reviewed for a 2011 Chevy Silverado — Mar 03, 2015 11:33 PM

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4 of 4 people found the following review helpful.

I installed the exhaust kit in my garage and was fairly easy to install with basic tools. Exhaust sounds really good with the catalytic converter on. Quite at idle and really nice tone at throttle.

flowmaster outlaw

Reviewed by Gabriel M (Houston, TX) Reviewed for a 2012 GMC Sierra — Feb 25, 2015 8:11 PM

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1 of 1 people found the following review helpful.

Great product and sounds great!!! Easy install

Flowmaster Outlaw

Reviewed by Aaron A (EAST PEORIA, IL) Reviewed for a 2012 Chevy Silverado — Dec 28, 2014 11:21 AM

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1 of 1 people found the following review helpful.

The Flowmaster Outlaw system definitely did not disappoint! Sounds amazing and makes me want to drive around just to listen to it! The only problem with installation was if you decided to go dual out the back the pipes were too long and it jutted out way too far. But some simple measuring and cutting of the pipes had that problem solved very quickly.


Reviewed by DAVE D (BERLIN, NJ) Reviewed for a 2010 Chevy Silverado — Dec 16, 2014 12:31 PM

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1 of 1 people found the following review helpful.


very aggressive sound

Reviewed by Jake W (Floyd, VA) — Dec 05, 2014 5:35 AM

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This product will turn heads. I have a 13 Silverado and it sounds like a duramax now. Great product

Flowmaster Exhaust Systems - 817688

Cat Back Exhaust - Outlaw Series
  • $215.55 - $1,999.97
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  • Style:
    Dual rear/dual side exit (409 Stainless)
  • Part #:
  • 3 inch pipe
  • Super 10 Muffler
  • 4 inch logo embossed black tips
  • Includes extension pipes for dual side or dual rear exit configurations
  • Limited Lifetime Warranty
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