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4" Aluminized Cat Back Single
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        4" Aluminized Cat Back Single | 2001-2007 GM 2500/3500 6.6L DURAMAX w/OEM 4 Bolt Flange (FLO-PRO)

        SKU: 431110

        Rev up your ride with the 4-inch Cat Back Single exhaust system, engineered for optimal performance on 2001-2007 GM 2500/3500 6.6L DURAMAX models. Constructed from durable aluminized steel, this high airflow design enhances horsepower while ensuring easy installation with included TorcTite clamps. Don't miss out on the chance to dominate the competition—upgrade your Duramax performance exhaust today and experience the powerful roar of excellence!

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        Mel’s Manufacturing
        Vehicle Specific
        Check if this part fits your vehicle.
        • Brand: Mel’s Manufacturing
          • 3% off
          $740.00 save $22.20
        • $717.80

        Engineered for optimal performance, this 4-inch Cat Back Single exhaust system is expertly constructed from 16 gauge aluminized steel, tailored for the 2001-2007 GM 2500/3500 6.6L DURAMAX. It features innovative preweld contour bends and comes equipped with high-quality TorcTite clamps to ensure a seamless installation process. Experience a remarkable enhancement in horsepower and airflow, designed to elevate your vehicle's capability while maintaining emissions compliance.

        Every component, including the OEM style 4 bolt flange, is manufactured for perfect compatibility and durability, making it an ideal choice for serious enthusiasts looking to push their performance to the next level.

        Upgrade your ride today and hear the unmistakable roar of performance with Mel's exhaust system; it’s designed for those ready to dominate the closed-course competition scene!

          • SKU
            431110
          • Weight
            70 lbs
          • Manufacturer Part #
            823
        • Brand
          Mel’s Manufacturing
        • Manufacturer
          Mel's Manufacturing
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        Shipping Times

        Most customers will see their parts within 3-5 business days. We will primarily ship with Purolator ground & DHL Express to ensure the fastest shipping possible.

        Please Note: These are only estimates and shipping time may vary depending on your location, out of country and rural locations expect longer wait times.

        Where Do We Ship 

        We will ship our products within Canada and the United States.

        Please Note: There are limitations what can be shipped to the United States.

        Damaged Shipments

        We provide the option to purchase insurance as we are not responsible for any damage while with a courier, we don’t often see issues, but it does happen. If you purchased insurance we will put in a claim, if no insurance was purchased there will be no refunds or exchanges.

        We accept the following payment methods:


        Return Policy

        It happens sometimes we would like to return it. Here are our return rules:

        • Prior to any return you must contact us and get an approval for a  RMA number
        • Product must be unopened and have no damage. 
        • You must pay for the shipping back, please insure so if anything happens you can make a claim, we are not responsible for damage during shipping and is the sole responsibility of the customer.
        • Regular products are subject to a 5% Restocking fee.
        • Items over 50 lbs. or special orders will be subject to a 20% Restocking fee.
        • Electronics & Tuning is a final sale and cannot be returned. 
        • Fitment Type
          Vehicle Specific
        YearMakeModelNotes
        2001ChevroletSilverado 3500 HD
        2001ChevroletSilverado 2500 HD
        2001GMCSierra 3500 HD
        2001GMCSierra 2500 HD
        2002ChevroletSilverado 3500 HD
        2002ChevroletSilverado 2500 HD
        2002GMCSierra 3500 HD
        2002GMCSierra 2500 HD
        2003ChevroletSilverado 3500 HD
        2003ChevroletSilverado 2500 HD
        2003GMCSierra 3500 HD
        2003GMCSierra 2500 HD
        2004ChevroletSilverado 3500 HD
        2004ChevroletSilverado 2500 HD
        2004GMCSierra 3500 HD
        2004GMCSierra 2500 HD
        2005ChevroletSilverado 3500 HD
        2005ChevroletSilverado 2500 HD
        2005GMCSierra 2500 HD
        2005GMCSierra 3500 HD
        2006ChevroletSilverado 3500 HD
        2006ChevroletSilverado 2500 HD
        2006GMCSierra 2500 HD
        2006GMCSierra 3500 HD
        2007GMCSierra 2500 HD
        2007GMCSierra 3500 HD
        2007ChevroletSilverado 2500 HD
        2007ChevroletSilverado 3500 HD