aFe 49-44059-B Large Bore-HD 4" 409 Stainless Steel Down-Pipe Back Exhaust System W/ Black Tip for GM Duramax 6.6L LLY/LBZ/LMM 2001-2010
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aFe 49-44059-B Large Bore-HD 4" 409 Stainless Steel Down-Pipe Back Exhaust System W/ Black Tip for GM Duramax 6.6L LLY/LBZ/LMM 2001-2010

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$681.29
SKU:
49-44059-B
Size Chart

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The Large Bore-HD down-pipe back exhaust system is engineered to perform in the most extreme environments. This system is constructed from 4" mandrel bent stainless steel tubing for maximum flow, increased horsepower, increased torque and lower EGT's. This system uses high quality band clamps, OE-style bayonet hangers and includes an adjustable hanger clamp for a tight secure fitment. This system is available with a free-flowing 24" long muffler and includes a 6" diameter black stainless steel clamp-on tip with a laser-cut stainless steel aFe power plate for an aggressive style. 

Installation is a Snap
This Large Bore-HD System Includes an extension pipe and an adjustable hanger for a perfect fit. This kit uses factory mounting locations providing stability and hassle-free installation. 

Leak-Free Seal:
High quality OE style flange and band clamps are used for a complete 360 degree sealing surface. 

Aggressive Sound
A free-flowing 24" long muffler is used to absorb high pitch tones producing a powerful sound and unleashing all available horsepower and torque out of your rig. 

OE Fit:
OE style bayonet hangers are used to maintain a stable pipe location during high vibration and high heat conditions. The Bayonet tip holds the hanger bushing in place for an OE style fit that does not change with time. 

Flow and Performance:
This Large Bore-HD exhaust system is constructed of 4" mandrel bent stainless steel tubing for maximum flow. Smooth transition bends allow for low turbulence, increasing horsepower, torque and lowering EGT's. 

6" Black Tip:
Finishing off the exhaust is a 6" diameter black stainless steel clamp-on tip with a laser-cut stainless steel aFe power plate for an aggressive style. 

Fitment Note
Crew Cab/Short Bed, Crew Cab Long Bed, Extended Cab/Short Bed, Extended Cab/Long Bed. 

Race Disclaimer:
This is a Race Only product that is to be used solely for competition, it cannot be used on vehicles that are operated on public streets, roads or highways. Its use is limited to closed-course and open-course racing that is formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, could be in violation of local, state and federal laws. 

VEHICLE APPLICATIONS

   YEAR          MAKE     MODEL      ENGINE
2001-2010 CHEVY SILVERADO   2500/3500 6.6L DURAMAX
2001-2010    GMC SIERRA   2500/3500 6.6L DURAMAX

Returns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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Call us: 954-720-8600

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Non Race Performance Products

Products not for sale or use in California
or on Emission Controlled Vehicles

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