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5" Stainless Downpipe Back Single NO Muffler
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        5" Stainless Downpipe Back Single NO Muffler | 2001-2004.5 GM 2500/3500 6.6L DURAMAX (FLO-PRO)

        SKU: 532111

        Transform your 2001-2004.5 GM 2500/3500 6.6L Duramax with the 5" Stainless Downpipe Back Single NO Muffler exhaust system, expertly crafted from durable aluminized steel or T409 stainless steel. Experience remarkable performance enhancement with reduced exhaust gas temperatures (EGTs) and high airflow, thanks to specially designed clamps and contour bends that ensure installation ease. Elevate your racing vehicle's capabilities today and feel the robust horsepower that awaits—you won’t be disappointed!

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        Mel’s Manufacturing
        Vehicle Specific
        Check if this part fits your vehicle.
        • Brand: Mel’s Manufacturing
          • 3% off
          $1120.00 save $33.60
        • $1086.40

        This exhaust solution is expertly crafted from either 16 gauge aluminized steel or T409 stainless steel, ensuring durability and optimal performance. Included with the system are specially designed clamps and pre-welded contour bends that simplify the installation process. Experience a significant increase in performance alongside reduced exhaust gas temperatures (EGTs) and enhanced airflow. Ideal for competitive racing conditions, this system is engineered for those seeking robust horsepower that you can both feel and hear.

        Key features such as contour bent hangers and TorcTite clamps make it a superior choice for your 2001-2004.5 GM 2500/3500 6.6L Duramax, fitting both cab/box configurations.

        Elevate your racing experience today—your vehicle deserves the best!

          • SKU
            532111
          • Weight
            79 lbs
          • Manufacturer Part #
            SS601NM
        • 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
        2004ChevroletSilverado 2500 HD
        2004ChevroletSilverado 3500 HD
        2004GMCSierra 3500 HD
        2004GMCSierra 2500 HD