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Flowmaster Outlaw Dual Exhaust System; Side/Rear Exit (14-18 5.3L Sierra 1500)

Item S503510
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Market Price $1,003.89 You Save 13% ($130.94)
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$872.95 (kit)

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      Video Review & Installation

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Improves Horsepower and Sound
      • 3-Inch Tailpipes
      • 4-Inch Exhaust Tips
      • Stainless Steel Construction
      • Super-Aggressive Sound
      • Black and Ceramic Tips
      • Easy Installation
      • Limited Lifetime Warranty
      • Fits 2014-2018 GMC Sierra 1500 Models with the 5.3L Engine


      Flowmaster Exhaust. Getting the best sound out of an exhaust system can be tough since there are so many different exhaust systems available on the market. Flowmaster has long been known for their high-quality exhaust systems and the Outlaw Cat-Back Exhaust is no exception. The Outlaw Exhaust is a great way to achieve an aggressive sound and increase performance in your GMC Sierra.

      Stainless Steel. The Flowmaster Outlaw Exhaust is constructed of stainless steel and uses 3-inch diameter tailpipes that flow out to 4-inch-wide black and ceramic exhaust tips. This system is completely bolt-on, and no welding is required.

      Warranty Information. Flowmaster includes a limited lifetime warranty on their exhaust systems. Please see full manufacturer warranty for additional details.

      Easy Installation. The Outlaw Exhaust can be installed easily in about 2 hours.

      Application. The Flowmaster Outlaw Cat-Back Exhaust fits all 2014-2018 GMC Sierra 1500 models with the 5.3L engine.

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      Fitment: 2014 2015 2016 2017 2018 Details

      Flowmaster 817689

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Exhaust Piping
      • (6) Connecting Clamps
      • (1) Installation Hardware

      Tech Specs


      Customer Reviews (100+)

        Questions & Answers

        10 More Questions

        Will It Fit My Sierra 1500

        • 5.3L V8 - 14, 15, 16, 17, 18

        Designed for Double & Crew Cab Models. It is not compatible on 2WD Crew Cab Models with 2-Piece Driveshaft.

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