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5" Aluminized Downpipe Back Single NO Muffler
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        5" Aluminized Downpipe Back Single NO Muffler | 2011-2015.5** GM 2500/3500 6.6L DURAMAX (FLO-PRO)

        SKU: 531006

        Upgrade your 2011-2015.5 GM 2500/3500 6.6L DURAMAX with this heavy-duty exhaust system crafted from durable aluminized steel or T409 Stainless, designed for easy installation with included clamps and hassle-free contour bends. Experience enhanced performance with boosted horsepower and reduced exhaust gas temperatures, making it the perfect off-road racing accessory for enthusiasts seeking a competitive edge. Don’t miss out on transforming your ride; unleash your vehicle's potential today!

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        Mel’s Manufacturing
        Vehicle Specific
        Check if this part fits your vehicle.
        • Brand: Mel’s Manufacturing
          • 3% off
          $1000.00 save $30.00
        • $970.00

        This high-performance exhaust system, crafted from 16 gauge aluminized steel or T409 Stainless, guarantees effortless installation with its included clamps, preweld contour bends, and enhanced flanges. Experience a significant increase in horsepower, reduced exhaust gas temperatures (EGTs), and boosted airflow to unleash your vehicle's full potential. Designed specifically for the 2011-2015.5 GM 2500/3500 6.6L DURAMAX, this system offers unparalleled performance and an unmistakable sound that resonates with power.

        The Mel's exhaust system is ideal for those who seek a competitive edge, especially in closed-course racing environments. It fits various cab/box configurations, making it versatile for multiple builds.

        Transform your ride today with this outstanding off-road racing accessory and feel the difference in performance and durability!

          • SKU
            531006
          • Weight
            87 lbs
          • Manufacturer Part #
            664NM
        • 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
        2011ChevroletSilverado 2500 HD
        2011ChevroletSilverado 3500 HD
        2011GMCSierra 2500 HD
        2011GMCSierra 3500 HD
        2012ChevroletSilverado 2500 HD
        2012ChevroletSilverado 3500 HD
        2012GMCSierra 2500 HD
        2012GMCSierra 3500 HD
        2013ChevroletSilverado 2500 HD
        2013ChevroletSilverado 3500 HD
        2013GMCSierra 3500 HD
        2013GMCSierra 2500 HD
        2014ChevroletSilverado 2500 HD
        2014ChevroletSilverado 3500 HD
        2014GMCSierra 2500 HD
        2014GMCSierra 3500 HD
        2015ChevroletSilverado 2500 HD
        2015ChevroletSilverado 3500 HD
        2015GMCSierra 2500 HD
        2015GMCSierra 3500 HD