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AFE ATLAS 4" Downpipe-Back Exhaust - 2006-2007 Duramax 6.6L LBZ

The AFE 49-04059 ATLAS 4" Downpipe-Back Exhaust System for your 2001-2010 GM 6.6L Duramax features a 4" mandrel bent construction and a "straight-pipe" design 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 unit uses all factory mounting locations this provides for a quick, hassle-free installation. This kit includes a muffler delete pipe for a more aggressive sound. ATLAS exhaust systems are the perfect combination of performance, fit and value. Exhaust tip not included.
Installation is a Snap:
This Atlas 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.
Flow and Performance:
This ATLAS exhaust system is constructed of 4" mandrel-bent aluminized steel tubing for maximum flow. Smooth transition bends allow for low turbulence, increasing horsepower, torque and lowering EGT’s.

OE Fitment:
OE-style hangers with bayonet tip are used to maintain a stable pipe location during high vibration and high heat conditions.


  • Turbo-Back Race Exhaust
  • 4" Mandrel-Bent Aluminized Construction
  • Adjustable Hanger To Cover All Models From 2001-2010 
  • Uses Factory Mounting Points For Hassle-Free Installation
Fitment Note: Crew Cab/Short Bed, Crew Cab Long Bed, Extended Cab/Short Bed, & Extended Cab/Long Bed

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