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    Flowmaster Exhaust Systems - 817689

    Cat Back Exhaust - Outlaw Series
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    • Style:
      Dual Rear Exit (409 Stainless)
    • Part #:
      817689
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    Reviews

    Flowmaster Exhaust Systems Part #817689 Customer Reviews

    Average Rating

    15 Customer Reviews

    2014 GMC Sierra Flowmaster

    Reviewed by JonAnthony G (CLAY, NY) Reviewed for a 2014 GMC Sierra — Apr 12, 2017 11:57 AM

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    The exhaust is awesome! Truck sounds really good. I have a cold air intake as well. Definitely notciable both inside and outside the vehicle. Highly recommended.

    Flowmaster outlaw serious silverado

    Reviewed by Rasmandingo S (LITHONIA, GA) Reviewed for a 2014 Chevy Silverado — Dec 17, 2016 8:47 AM

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    Sounds like there's a demon under my truck !!!!! AMAZING WOKE THE TRUCK UP

    Flowmaster outlaw syetem

    Reviewed by Bruce D (CLIFTON PARK, NY) Reviewed for a 2014 GMC Sierra — Oct 18, 2016 2:01 AM

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    I like the sound alot, it does wonders for my GMC. Happy to havr. Also a gas saver. I did have one of the black tip scratched when it was shipped. Called and sent a picture. It was well rapped and boxed but scratched when put in the box. Called, sent picture of it and was told another was shipped to me. Not here yet must be coming by dog sled!

    Flowmaster Outlaw system

    Reviewed by Randy W (St. Albans, ME) Reviewed for a 2016 Chevy Silverado — Sep 23, 2016 5:10 AM

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    Installed Flowmaster's Outlaw system on my new 2016 Chevy Silverado along with a K&N Intake. I immediately noticed horsepower gains and better fuel mileage. The only negative issue was noted during installation. The pipes did not properly secure onto each other with the provided clamps. You are required to spot weld or modify the pipes by cutting an opposing slot to the one factory cut, which will allow the pipes to secure onto each other with provided clamps. Flowmaster is aware of issue.

    Great rumble

    Reviewed by Christopher M (Plainfield, IL) — Sep 04, 2016 6:35 AM

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    Installed on my 2016 1500 Silverado Z71. Took me 2 hours to get stock one off and flow master on. Only problem I had was with clamps. Tighten them all the way and exhaust system still moves. Used other clamps and is perfect now. Love the sound!

    Outlaw

    Reviewed by Randall B (DELTON, WI) Reviewed for a 2014 GMC Sierra — Aug 02, 2016 1:49 AM

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    The exhaust was a good fit and sounds great. Only problem is having to spend an extra $20 on better clamps cause the ones that are supplied DO NOT work.

    Good exhaust, perfect for what I needed.

    Reviewed by Benjamin Y (Logan, UT) Reviewed for a 2016 Chevy Silverado — Jul 26, 2016 6:20 AM

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    I had a mechanic install it for me, but it only cost like 120 dollars to install it. The sound is really amazing, it really adds to the whole vehicle! I put it on a 2016 Chevy Silverado.

    FLOW MASTER OUTLAW

    Reviewed by Mark H (GILBERT, AZ) Reviewed for a 2016 Chevy Silverado — May 30, 2016 9:18 PM

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    WOW!! What an amazing exhaust system The OUTLAW was easy to install an the Sound is SWEET Have always loved Flomaster exhaust system will always use them on all my vehicles Thank you AutoAnything for a super fast delivery an another fantastic product

    Fourth Flowmaster Set-Up Install. A+

    Reviewed by Rich B (Blossvale, NY) Reviewed for a 2016 GMC Sierra — Mar 16, 2016 5:01 AM

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    I have flowmasters on many of my vehicles and they look great, sound amazing and install rather quickly and with ease.

    Awsome Sound

    Reviewed by Sean C (Irving, TX) Reviewed for a 1994 Jeep Wrangler — Sep 12, 2015 7:39 PM

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    This exhaust is very aggressive. At idle it is very quiet with my 5.3 V8. With my foot on the pedal is very raspy and throaty. I'm always stepping on it cause it sounds great.