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4" Aluminized Cat & DPF Race Pipe With Muffler
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        4" Aluminized Cat & DPF Race Pipe | 2011-2015.5** GM 2500/3500 6.6L DURAMAX With Muffler (FLO-PRO)

        SKU: 431029

        Upgrade your vehicle's performance with the 4" Aluminized Cat & DPF Race Pipe, meticulously crafted from robust aluminized steel to ensure durability and high performance. Experience enhanced horsepower and exhilarate your senses with a powerful sound, all while benefiting from lower exhaust gas temperatures and improved airflow. Perfectly compatible with 2011-2015.5 GM 2500/3500 Duramax models, this system simplifies installation and is designed for serious racers—don't miss out on the ultimate upgrade for your vehicle!

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        Mel’s Manufacturing
        Vehicle Specific
        Check if this part fits your vehicle.
        • Brand: Mel’s Manufacturing
          • 3% off
          $650.00 save $19.50
        • $630.50

        Engineered from robust 16 gauge aluminized steel or T409 stainless, this specialized exhaust system is meticulously designed to simplify the installation process with precision-made clamps and contour bends. Experience enhanced performance, lower exhaust gas temperatures, and improved airflow as you elevate your vehicle's capabilities. Mel's exhaust system not only increases horsepower but also delivers an exhilarating sound that signifies your vehicle's true potential.

        This system is compatible with various cab and box configurations, ensuring an optimal fit for your 2011-2015.5 GM 2500/3500 Duramax models. However, please note the specific turbo direct pipe compatibility for models utilizing a V-band clamp.

        For non-registered race applications only, this product is intended for competitive use in closed-course events. Elevate your vehicle's performance with Mel's—where power meets precision!

          • SKU
            431029
          • Weight
            35 lbs
          • Manufacturer Part #
            862M
        • Material
          Aluminized, Stainless
        • Muffler
          With Muffler, Without Muffler
        • 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
        2011GMCSierra 2500 HD
        2011GMCSierra 3500 HD
        2011ChevroletSilverado 2500 HD
        2011ChevroletSilverado 3500 HD
        2012GMCSierra 2500 HD
        2012GMCSierra 3500 HD
        2012ChevroletSilverado 2500 HD
        2012ChevroletSilverado 3500 HD
        2013GMCSierra 2500 HD
        2013GMCSierra 3500 HD
        2013ChevroletSilverado 3500 HD
        2013ChevroletSilverado 2500 HD
        2014GMCSierra 2500 HD
        2014GMCSierra 3500 HD
        2014ChevroletSilverado 2500 HD
        2014ChevroletSilverado 3500 HD
        2015GMCSierra 2500 HD
        2015GMCSierra 3500 HD
        2015ChevroletSilverado 2500 HD
        2015ChevroletSilverado 3500 HD