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    Flowmaster Flow FX Cat-Back Exhaust System

    Vendor: Flowmaster Type: Exhaust System Kit
    This Flowmaster® Flow FX® cat-back exhaust system for the 2020-2025 GM 2500HD/3500HD trucks with the 6.6-liter gas engine is manufactured...
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    $879.95 $989.95
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    Product DetailsRelated ProductsRecently Viewed Reviews & Ratings
    This Flowmaster® Flow FX® cat-back exhaust system for the 2020-2025 GM 2500HD/3500HD trucks with the 6.6-liter gas engine is manufactured using durable 409 stainless steel throughout and features 3.50 to dual 3.00-inch mandrel bent pipes for better exhaust gas flow, and a Flow FX "straight-through" muffler is used for a moderate sound level and maximum performance. Maximum increases on the dyno revealed +9 hp and +10 lb-ft at the rear wheels. This system exits out both sides, behind the rear wheels with 4.50-inch black ceramic tips for added style and a custom look. The system uses all the existing factory hanger locations and includes installation instructions and all necessary hardware for an easy installation that you can do at home. Backed by Flowmaster's Lifetime Limited Warranty.


    Flowmaster Flow FX Cat-Back Exhaust System


    This Part Fits:

    Year Make Model Submodel Notes
    2020 Chevrolet Silverado 2500 HD Custom
    2021 Chevrolet Silverado 2500 HD Custom
    2022 Chevrolet Silverado 2500 HD Custom
    2023 Chevrolet Silverado 2500 HD Custom
    2024 Chevrolet Silverado 2500 HD Custom
    2025 Chevrolet Silverado 2500 HD Custom
    2026 Chevrolet Silverado 2500 HD Custom
    2020 Chevrolet Silverado 2500 HD High Country
    2021 Chevrolet Silverado 2500 HD High Country
    2022 Chevrolet Silverado 2500 HD High Country
    2023 Chevrolet Silverado 2500 HD High Country
    2024 Chevrolet Silverado 2500 HD High Country
    2025 Chevrolet Silverado 2500 HD High Country
    2026 Chevrolet Silverado 2500 HD High Country
    2020 Chevrolet Silverado 2500 HD LT
    2021 Chevrolet Silverado 2500 HD LT
    2022 Chevrolet Silverado 2500 HD LT
    2023 Chevrolet Silverado 2500 HD LT
    2024 Chevrolet Silverado 2500 HD LT
    2025 Chevrolet Silverado 2500 HD LT
    2026 Chevrolet Silverado 2500 HD LT
    2020 Chevrolet Silverado 2500 HD LTZ
    2021 Chevrolet Silverado 2500 HD LTZ
    2022 Chevrolet Silverado 2500 HD LTZ
    2023 Chevrolet Silverado 2500 HD LTZ
    2024 Chevrolet Silverado 2500 HD LTZ
    2025 Chevrolet Silverado 2500 HD LTZ
    2026 Chevrolet Silverado 2500 HD LTZ
    2020 Chevrolet Silverado 2500 HD WT
    2021 Chevrolet Silverado 2500 HD WT
    2022 Chevrolet Silverado 2500 HD WT
    2023 Chevrolet Silverado 2500 HD WT
    2024 Chevrolet Silverado 2500 HD WT
    2025 Chevrolet Silverado 2500 HD WT
    2026 Chevrolet Silverado 2500 HD WT
    2020 Chevrolet Silverado 3500 HD High Country
    2021 Chevrolet Silverado 3500 HD High Country
    2022 Chevrolet Silverado 3500 HD High Country
    2023 Chevrolet Silverado 3500 HD High Country
    2024 Chevrolet Silverado 3500 HD High Country
    2025 Chevrolet Silverado 3500 HD High Country
    2026 Chevrolet Silverado 3500 HD High Country
    2020 Chevrolet Silverado 3500 HD LT
    2021 Chevrolet Silverado 3500 HD LT
    2022 Chevrolet Silverado 3500 HD LT
    2023 Chevrolet Silverado 3500 HD LT
    2024 Chevrolet Silverado 3500 HD LT
    2025 Chevrolet Silverado 3500 HD LT
    2026 Chevrolet Silverado 3500 HD LT
    2020 Chevrolet Silverado 3500 HD LTZ
    2021 Chevrolet Silverado 3500 HD LTZ
    2022 Chevrolet Silverado 3500 HD LTZ
    2023 Chevrolet Silverado 3500 HD LTZ
    2024 Chevrolet Silverado 3500 HD LTZ
    2025 Chevrolet Silverado 3500 HD LTZ
    2026 Chevrolet Silverado 3500 HD LTZ
    2020 Chevrolet Silverado 3500 HD WT
    2021 Chevrolet Silverado 3500 HD WT
    2022 Chevrolet Silverado 3500 HD WT
    2023 Chevrolet Silverado 3500 HD WT
    2024 Chevrolet Silverado 3500 HD WT
    2025 Chevrolet Silverado 3500 HD WT
    2026 Chevrolet Silverado 3500 HD WT
    2020 GMC Sierra 2500 HD AT4
    2021 GMC Sierra 2500 HD AT4
    2022 GMC Sierra 2500 HD AT4
    2023 GMC Sierra 2500 HD AT4
    2024 GMC Sierra 2500 HD AT4
    2025 GMC Sierra 2500 HD AT4
    2026 GMC Sierra 2500 HD AT4
    2020 GMC Sierra 2500 HD Base
    2021 GMC Sierra 2500 HD Base
    2020 GMC Sierra 2500 HD Denali
    2021 GMC Sierra 2500 HD Denali
    2022 GMC Sierra 2500 HD Denali
    2023 GMC Sierra 2500 HD Denali
    2024 GMC Sierra 2500 HD Denali
    2025 GMC Sierra 2500 HD Denali
    2026 GMC Sierra 2500 HD Denali
    2022 GMC Sierra 2500 HD Pro
    2023 GMC Sierra 2500 HD Pro
    2024 GMC Sierra 2500 HD Pro
    2025 GMC Sierra 2500 HD Pro
    2026 GMC Sierra 2500 HD Pro
    2020 GMC Sierra 2500 HD SLE
    2021 GMC Sierra 2500 HD SLE
    2022 GMC Sierra 2500 HD SLE
    2023 GMC Sierra 2500 HD SLE
    2024 GMC Sierra 2500 HD SLE
    2025 GMC Sierra 2500 HD SLE
    2026 GMC Sierra 2500 HD SLE
    2020 GMC Sierra 2500 HD SLT
    2021 GMC Sierra 2500 HD SLT
    2022 GMC Sierra 2500 HD SLT
    2023 GMC Sierra 2500 HD SLT
    2024 GMC Sierra 2500 HD SLT
    2025 GMC Sierra 2500 HD SLT
    2026 GMC Sierra 2500 HD SLT
    2020 GMC Sierra 3500 HD AT4
    2021 GMC Sierra 3500 HD AT4
    2022 GMC Sierra 3500 HD AT4
    2023 GMC Sierra 3500 HD AT4
    2024 GMC Sierra 3500 HD AT4
    2025 GMC Sierra 3500 HD AT4
    2026 GMC Sierra 3500 HD AT4
    2020 GMC Sierra 3500 HD Base
    2021 GMC Sierra 3500 HD Base
    2020 GMC Sierra 3500 HD Denali
    2021 GMC Sierra 3500 HD Denali
    2022 GMC Sierra 3500 HD Denali
    2023 GMC Sierra 3500 HD Denali
    2024 GMC Sierra 3500 HD Denali
    2025 GMC Sierra 3500 HD Denali
    2026 GMC Sierra 3500 HD Denali
    2022 GMC Sierra 3500 HD Pro
    2023 GMC Sierra 3500 HD Pro
    2024 GMC Sierra 3500 HD Pro
    2025 GMC Sierra 3500 HD Pro
    2026 GMC Sierra 3500 HD Pro
    2020 GMC Sierra 3500 HD SLE
    2021 GMC Sierra 3500 HD SLE
    2022 GMC Sierra 3500 HD SLE
    2023 GMC Sierra 3500 HD SLE
    2024 GMC Sierra 3500 HD SLE
    2025 GMC Sierra 3500 HD SLE
    2026 GMC Sierra 3500 HD SLE
    2020 GMC Sierra 3500 HD SLT
    2021 GMC Sierra 3500 HD SLT
    2022 GMC Sierra 3500 HD SLT
    2023 GMC Sierra 3500 HD SLT
    2024 GMC Sierra 3500 HD SLT
    2025 GMC Sierra 3500 HD SLT
    2026 GMC Sierra 3500 HD SLT
    Product specifications
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