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Flowmaster American Thunder Dual Exhaust System with Polished Tips; Side/Rear Exit (20-24 6.6L Gas Sierra 3500 HD)

Item SHG8318
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$963.95 (kit)

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Ship to: Ashburn - 20149
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Total cost of service $299.00
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      Product Information

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

      Features & Specs

      • Deep Aggressive Performance Tone
      • Improves Exhaust Flow for an Increase in Power
      • 50 Series Performance Mufflers
      • Mandrel-bent 3-inch 409 Stainless Steel Tubing
      • Dual Side or Dual Rear Exit
      • Polished 304 Stainless Steel 4-inch Exhaust Tips
      • Direct Bolt-On Upgrade
      • Fits 2020-2024 6.6L GMC Sierra 3500 HD Crew Cab Models with Standard Box

      Description

      Flowmaster 50 Series Sound. Upgrading to a Flowmaster American Thunder Dual Exhaust System will unleash the beast hiding under the hood of your 3500 GMC Sierra. This American Thunder Cat-Back will convert your Sierra's quiet, tame exhaust note into an aggressive one, with a moderate to aggressive tone inside the cab. Additionally this Kit comes with two sets of tail pipes for either a dual out the back look or dual out behind the rear tires, which is beneficial for towing.

      Power And Performance. Flowmaster American Thunder Dual Exhaust not only improves the sound of your 3500 Sierra, but it will also improve its performance. With the help of its free flowing muffler design and high-flow mandrel bent piping, this Cat-Back will significantly improve exhaust flow for an increase in rear wheel horsepower and torque.

      Stainless Steel Construction. Flowmaster manufactures their Cat-Back Exhaust Systems from 3-inch mandrel bent 16-gauge, 409 stainless steel tubing for it's durability and strength. This Cat-Back features a "50 Series" performance muffler with a pair of 4-inch diameter 304 polished stainless steel tips for impressive styling and sound.

      Direct Bolt-On Installation. Flowmaster engineered their Cat-Back Exhaust to be a direct bolt-on upgrade replacement. This American Thunder Dual Exhaust System will easily bolt straight up to the factory piping without any cutting, modifications or special tools required for an easy straight forward installation.

      Application. This Flowmaster American Thunder Dual Exhaust System with Polished Tips; Side/Rear Exit is designed to fit 2020-2024 6.6L GMC Sierra 3500 HD Crew Cab models equipped with a Standard Box.

      Fitment:

      • 2020 GMC Sierra 3500
      • 2021 GMC Sierra 3500
      • 2022 GMC Sierra 3500
      • 2023 GMC Sierra 3500
      • 2024 GMC Sierra 3500
      Details

      Flowmaster 817933

      CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • Inlet Pipe Assembly
      • Muffler
      • Right Tailpipe, Front
      • Left Tailpipe, Front
      • Right Tailpipe, Rear
      • Left Tailpipe, Rear
      • (2) Tips
      4.6

      Customer Reviews (233)

        Questions & Answers

        10 More Questions

        Will It Fit My Sierra 3500

        • 6.6L V8 - 20, 21, 22, 23, 24