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4" Aluminized Downpipe Back Duals | 2001-2004.5 GM 2500/3500 6.6L DURAMAX (FLO-PRO)
Upgrade your truck with the 4" Exhaust System, engineered from durable 16 gauge aluminized steel or T409 stainless steel for superior strength and longevity. Designed specifically for the 2001-2004.5 GM 2500/3500 6.6L Duramax, this high-performance exhaust enhances airflow and increases horsepower, while featuring an easy installation process with contour bend hangers and TorcTite clamps. Don’t miss your chance to unleash your vehicle’s full potential—transform your ride today with Mel’s reliable exhaust system!
Engineered with precision from 16 gauge aluminized steel or T409 Stainless, the 4" Exhaust System is the ultimate upgrade for your 2001-2004.5 GM 2500/3500 6.6L Duramax. This system is designed for effortless installation, featuring contour bend hangers and TorcTite clamps, ensuring a secure fit without hassle.
Experience enhanced performance with improved airflow and reduced exhaust gas temperatures, allowing your vehicle to tap into its full potential. This high-performance exhaust is tailored for non-registered race vehicles participating in closed-course competition events.
Don’t miss out on the opportunity to amplify your vehicle’s capabilities. Transform your ride today with Mel's reliable exhaust system, where horsepower meets precision.
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.
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 TypeVehicle Specific
Year | Make | Model | Notes |
---|---|---|---|
2001 | Chevrolet | Silverado 3500 HD | |
2001 | Chevrolet | Silverado 2500 HD | |
2001 | GMC | Sierra 3500 HD | |
2001 | GMC | Sierra 2500 HD | |
2002 | Chevrolet | Silverado 3500 HD | |
2002 | Chevrolet | Silverado 2500 HD | |
2002 | GMC | Sierra 3500 HD | |
2002 | GMC | Sierra 2500 HD | |
2003 | Chevrolet | Silverado 3500 HD | |
2003 | Chevrolet | Silverado 2500 HD | |
2003 | GMC | Sierra 3500 HD | |
2003 | GMC | Sierra 2500 HD | |
2004 | Chevrolet | Silverado 3500 HD | |
2004 | Chevrolet | Silverado 2500 HD | |
2004 | GMC | Sierra 2500 HD | |
2004 | GMC | Sierra 3500 HD |