AFE Power Large Bore-HD 4" Downpipe Back Stainless Steel Exhaust System

2007.5 - 2010 6.6L GM Duramax LMM

$584.00
SKU NWD-49-44017-P
Options

49-44017-P / 49-44017-B

The Large Bore-HD exhaust is engineered to perform in the most extreme environments. This system is constructed from mandrel bent 4" stainless steel tubing for maximum flow, increased horsepower, increased torque and lower EGT's. The system is available in a 4" down-pipe back with muffler and is finished off with a polished or black tip. Large Bore-HD exhaust systems are the perfect combination of performance, fit and value.

  • Features
  • Videos
  • Instructions
  • Vehicle Fitment

Installation is a Snap:
All systems use factory mounting locations providing stability and a 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" x 8" 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 Fitment:
OE-style hangers with bayonet tip are used to maintain a stable pipe location during high vibration and high heat conditions.

Flow and Performance:
Large Bore-HD exhaust systems are 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.

Polished Tip:
Finishing off the exhaust is a high luster, polished 304 stainless steel exhaust tip. This tip features a drain port on the bottom to keep rust and corrosion away. A unique stainless steel laser-cut aFe Power logo plate is riveted on for an aggressive style.

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.

Year
Make
Engine

2007 - 2010

GM Duramax

6.6L LMM