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    Flowmaster Exhaust Systems - 817669

    Cat Back Exhaust - American Thunder Series
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    • $255.97 - $1,557.97
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    • Ships By 5/01
    • What Do You Drive?

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    • Style:
      Dual rear/dual side exit (409 Stainless)
    • Part #:
      817669
    • Super 40 Series Muffler
    • 3.5" stainless tips with embossed Flowmaster logo
    • Includes extension pipes for installing as a dual-out-rear or dual-out-side system
    • Lifetime Limited Warranty
    • Click for sound clip (mp3)
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    Reviews

    Flowmaster Exhaust Systems Part #817669 Customer Reviews

    Average Rating

    17 Customer Reviews

    Rumble in the Jungle

    Reviewed by Mike S (SPRINGFIELD, IL) Reviewed for a 2017 GMC Sierra — Apr 12, 2017 6:23 AM

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    The exhaust sounds great for my 2017 Sierra. Not too loud and cab noise only gets loud while cruising at 75+ but it's not overbearing. The installation wasn't too bad after I got a cheater bar to tighten the clamps. I also added a tuner super chip which is a must if you want to feel the true power your truck is capable of.

    America Thunder

    Reviewed by Brian F (WOODBURY, CT) Reviewed for a 2014 Chevy Silverado — Feb 28, 2017 7:28 AM

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    Exhaust system sounds great and was easy to install. I was disappointed with the clamps that came with it since they did not tighten down enough to hold the pipes in place. For a $750 system everything included should work as intended. I had to go to the auto parts store and purchase 5 cheap clamps as replacements. Other than that I would recommend the system.

    FLowmaster American THunder

    Reviewed by Joshu S (CICERO, NY) Reviewed for a 2016 Chevy Silverado — Feb 09, 2017 7:41 AM

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    Great product, with excellent warranty, and price from autoanything.

    Awesome!

    Reviewed by Herb E (Fort Myers, FL) Reviewed for a 2016 Chevy Silverado — Dec 14, 2016 1:44 AM

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    Nice roar withou being annoying.

    KUDOS

    Reviewed by WALTER E (JOHNSONVILLE, NY) Reviewed for a 2015 GMC Sierra — Nov 15, 2016 4:40 AM

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    GREAT PRODUCT, SOUNDS EXCELLENT

    Great system

    Reviewed by Jarrett W (ORLANDO, FL) Reviewed for a 2016 Chevy Silverado — Oct 15, 2016 7:18 AM

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    The system fit great, and the sound is exactly what I was looking for. It took me around an hour and a half to remove the stock system and put this on. The sound is a loud deep rumble, without being obnoxious. The only thing negative is it doesn't sound very good in v4 mode.

    flowmaster exhaust

    Reviewed by Danny F (Fitzgerald, GA) Reviewed for a 2015 GMC Sierra — Jul 11, 2016 6:44 AM

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    The Flowmaster exhaust certainly gives you a bark to your exhaust.

    great look and sound

    Reviewed by juan m (CLARKSTON, WA) Reviewed for a 2014 Chevy Silverado — Jul 07, 2016 8:46 AM

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    isa great system i like how sounds and how looks too.. I'm happy with that

    Almost perfect

    Reviewed by Darren T (DENVER, CO) Reviewed for a 2014 Chevy Silverado — Apr 18, 2016 12:33 PM

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    Good system, sounds great. Install wasn't too bad, definitely need two people. The bolt in one of the clamps was cross threaded and set the install back a bit. The big disappointment came when bolting on the tips. The bolts in the kit are CHEAP! The nuts stripped right off the threads when I tried to tighten them down. Had to go to Home Depot to buy quality stainless steel bolts.

    Exhaust

    Reviewed by stuart m (Freeport, IL) Reviewed for a 2015 GMC Sierra — Mar 10, 2016 5:41 AM

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    I want to thank you for another set of exhaust. Your staff is always friendly and very helpful.