Interested in a new exhaust system for your 2001-2007 Duramax? Check out the Large Bore-HD DP-Back Dual side exit exhaust system by aFe. This system is constructed from 4" mandrel-bent 409 stainless steel tubing and uses a 24"L muffler, high quality band clamps and OE-style bayonet hangers. This unit uses all factory mounting locations and comes with a bolt-on bracket that supports the driverside tailpipe. This provides for a quick, hassle-free installation with no modification necessary. Also included in this exhaust system are massive dual 6" high temp black powder-coated stainless steel tips with a laser-cut stainless steel aFe power badges. Large Bore-HD exhaust systems are the perfect combination of performance, fit and value.
Installation is a Snap:
All systems use factory mounting locations providing stability and a hassle-free installation.
High quality OE-style flange and band clamps are used for a complete 360 degree sealing surface.
Fits With Spare Tire:
This exhaust system fits perfectly without removing the spare tire.
Flow and Performance:This Large Bore-HD exhaust system is constructed of 4" mandrel-bent 409 stainless steel tubing for maximum flow. Smooth transition bends allow for low turbulence, increasing horsepower, torque and lowering EGT's.
OE-style hangers with bayonet tip are used to maintain a stable pipe location during high vibration and high heat conditions.
Finishing off the exhaust are dual high luster, polished 304 stainless steel slash-cut tips. The tips feature a drain port on the bottom to keep rust and corrosion away.
Note: This is a "Race Only" product used solely for competition. 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.
All aFe exhaust systems are engineered and manufactured in our Corona, California manufacturing facility.
Year Make Model SubModel Engine Fuel 2001-2004 Chevrolet Silverado HD 2500HD/3500HD (LB7) Duramax Turbo Diesel V8 6.6L Diesel 2004-2005 Chevrolet Silverado HD 2500HD/3500HD (LLY) Duramax Turbo Diesel V8 6.6L Diesel 2006-2007 Chevrolet Silverado HD 2500HD/3500HD (LLY/LBZ) Duramax Turbo Diesel V8 6.6L Diesel 2001-2004 GMC Sierra HD 2500HD/3500HD (LB7) Duramax Turbo Diesel V8 6.6L Diesel 2004-2005 GMC Sierra HD 2500HD/3500HD (LLY) Duramax Turbo Diesel V8 6.6L Diesel 2006-2007 GMC Sierra HD 2500HD/3500HD (LLY/LBZ) Duramax Turbo Diesel V8 6.6L Diesel
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