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4" Stainless Downpipe Back Single With Muffler
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        4" Stainless Downpipe Back Single With Muffler | 2015.5-2016 GM 2500/3500 6.6L DURAMAX (FLO-PRO)

        SKU: 432018

        Transform your ride with the Mel's Manufacturing 4" Stainless Downpipe Back Exhaust System, expertly crafted from durable T409 stainless steel for long-lasting performance. This high-flow exhaust system is designed to enhance your 2015.5-2016 GM 2500/3500 6.6L Duramax with increased horsepower and optimized airflow, making it an ideal choice for closed-course competition use. Experience effortless installation and exceptional sound – elevate your truck's performance today!

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        Mel’s Manufacturing
        Vehicle Specific
        Check if this part fits your vehicle.
        • Brand: Mel’s Manufacturing
          • 3% off
          $1210.00 save $36.30
        • $1173.70

        Experience superior performance with the Mel's Manufacturing Stainless Downpipe Back Exhaust System, meticulously crafted from premium 16 gauge aluminized steel or durable T409 stainless steel. This system is engineered for effortless installation, featuring preweld contour bends and included TorcTite clamps, ensuring a perfect fit.

        Enhance your driving experience with a significant increase in horsepower, reduced exhaust gas temperatures, and optimized airflow. Designed specifically for the 2015.5-2016 GM 2500/3500 6.6L Duramax, this system suits OEM style 3-bolt flanges, maximizing compatibility for high-performance applications.

        Ideal for non-registered race vehicles in closed-course competitions, invest in Mel's for a not only powerful sound but also exceptional efficiency. Transform your truck’s performance today!

          • SKU
            432018
          • Weight
            74 lbs
          • Manufacturer Part #
            SS871
        • 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
        2016GMCSierra 2500 HD
        2016GMCSierra 3500 HD
        2016ChevroletSilverado 2500 HD
        2016ChevroletSilverado 3500 HD
        2015GMCSierra 2500 HD
        2015GMCSierra 3500 HD
        2015ChevroletSilverado 2500 HD
        2015ChevroletSilverado 3500 HD