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Gibson 3.5 Inch / 3 Inch Dual Extreme Stainless Cat-Back Exhaust System; Split Side Exit (07-09 6.2L Denali)

Item S500667
AmericanTrucks no longer carries the Gibson 3.5 Inch / 3 Inch Dual Extreme Stainless Cat-Back Exhaust System; Split Side Exit (07-09 6.2L Denali). Please check out 2019-2021 GMC Sierra Exhaust Systems for an updated selection.
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    Product Information

    Features, Description, Q&A, Specs & Installation


    • Boost Where It’s Needed
    • Aggressive Tone and Sound
    • Average Boost of 15-20HP
    • Stainless Steel for Corrosion Resistance
    • Direct Bolt-On Installation
    • Uses Stock Hanger Locations
    • Limited Lifetime Warranty
    • Fits 2007-2009 GMC Sierra Denali with 6.2L V8


    The Impact of Dual Exhausts. Give your Sierra visual and sonic impact -- along with a performance boost – with this dual-exit cat-back by Gibson. The aggressive dyno-tuned sound must be heard to be believed, and average power increases of 15-20 peak HP are not uncommon. Stainless-steel construction resists rust and corrosion. This is the dual-exit cat-back good enough to be called a Gibson.

    Built for Power and Durability. Gibson uses high-quality stainless-steel 1.75-inch diameter tubing. The header tubes are tuned for maximum and ideal flow characteristics. The sound gives that aggressive bite expected of a dual-exit system. Gibson covers this exhaust under their lifetime warranty.

    Headache-Free Installation. All necessary hardware and gaskets are included for a smooth installation experience. This system uses stock hanger locations wherever possible. Follow the fully-documented, step-by-step installation instructions and start enjoying the benefits.

    Application. The Gibson 3.5 in. / 3 in. Dual Extreme Stainless Steel Cat-Back Exhaust System with a Split Side Exit is designed for the 2007-2009 6.2L GMC Sierra Denali with the following cab and box configuration.
    • Crew Cab with the Short Box


    CA Residents: WARNING: Cancer and Reproductive Harm -

    Installation & What's in the Box

    Installation Info

    What's in the Box

    • (1) Headpipe
    • (1) Muffler
    • (2) Tailpipe
    • (2) Exit Pipe
    • (2) Exhaust Tips
    • (1) Hardware Kit

    Questions & Answers

    10 More Questions

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