AFE 49-04033NM ATLAS 5" Downpipe-Back No Muffler Race Exhaust System

2007.5-2010 GM 6.6L Duramax LMM
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The AFE 49-04033NM ATLAS 5" Downpipe-Back No Muffler Race Exhaust System for your 2007.5-2010 GM 6.6L Duramax is engineered to perform in the most extreme environments. This system is constructed from mandrel bent 5" aluminized steel tubing for maximum flow, increased horsepower, increased torque and lower EGT’s. This system is available in 5" down-pipe back without muffler. ATLAS exhaust systems are the perfect combination of performance, fit and value.

Installation is a Snap:

ATLAS exhaust systems utilize a 2-piece tailpipe design for a perfect fit by allowing adjustability at the tailpipe section. All systems use 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 muffler delete-pipe is used for a true race-inspired sound and maximum flow.

Perfect 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:

ATLAS exhaust systems are constructed of 5" mandrel bent aluminized steel tubing for maximum flow. Smooth transition bends allow for low turbulence, increasing horsepower, torque and lowering EGT’s.


  • Down-Pipe Back Race Exhaust
  • 5" Aluminized Steel Construction
  • No Muffler - "Straight Pipe Design"
  • Bolt-On Replacement - From Factory Downpipe-Back

Warning: This free-flow race exhaust system requires the use of an aftermarket performance programmer with off-road tuning.

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(3 Ratings, 1 Review) Average Rating:
Roberto Gonzalez (miami) 12/1/2014 3:02 PM
I know people with and I love it so I bought it order number650708