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5" Aluminized Downpipe Back Single With Muffler
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        5" Aluminized Downpipe Back Single With Muffler | 2001-2004.5 GM 2500/3500 6.6L DURAMAX (FLO-PRO)

        SKU: 531100

        Experience the power of the 5" Aluminized Downpipe Back Single with Muffler, designed for 2001-2004.5 GM 2500/3500 models with a 6.6L Duramax engine. This high-performance exhaust system enhances improved airflow technology while delivering a significant increase in horsepower and lower exhaust gas temperatures, making it perfect for the track. Elevate your ride and unleash the full potential of your Duramax—order now and feel the difference!

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        Mel’s Manufacturing
        Vehicle Specific
        Check if this part fits your vehicle.
        • Brand: Mel’s Manufacturing
          • 3% off
          $1020.00 save $30.60
        • $989.40

        Experience unparalleled power with the Mel's 5" Aluminized Downpipe Back Single with Muffler, engineered specifically for 2001-2004.5 GM 2500/3500 models equipped with the 6.6L Duramax engine.

        Crafted from durable 16 gauge aluminized steel or T409 stainless, this high-performance exhaust system promises not only improved airflow technology but also a noticeable boost in horsepower and lower exhaust gas temperatures (EGTs). The installation process is streamlined with pre-welded contour bends and included TorcTite clamps, ensuring an effective fit without the hassle.

        Transform your vehicle into a powerhouse on the track while adhering to competition guidelines; however, please note that this part is not street legal. Elevate your driving experience and unleash the full potential of your Duramax!

          • SKU
            531100
          • Weight
            84 lbs
          • Manufacturer Part #
            601
        • 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
        2001ChevroletSilverado 2500 HD
        2001ChevroletSilverado 3500 HD
        2001GMCSierra 2500 HD
        2001GMCSierra 3500 HD
        2002ChevroletSilverado 2500 HD
        2002ChevroletSilverado 3500 HD
        2002GMCSierra 2500 HD
        2002GMCSierra 3500 HD
        2003ChevroletSilverado 2500 HD
        2003ChevroletSilverado 3500 HD
        2003GMCSierra 2500 HD
        2003GMCSierra 3500 HD
        2004GMCSierra 2500 HD
        2004GMCSierra 3500 HD
        2004ChevroletSilverado 2500 HD
        2004ChevroletSilverado 3500 HD