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AFE 49-44003 MACH Force XP 4" Downpipe-Back Exhaust System

XDP Price: From $494.10 to $521.10
Manufacturer: AFE

Application: 01-07 GM 6.6L Duramax (LB7/LLY/LBZ)

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The Mach FORCE XP 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 powder-coated black tip. Mach FORCE XP 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.

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:
Mach FORCE XP 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.

Massive 6" Black Tip:
Finishing off the exhaust is a powder-coated black 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.

Product Reviews

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(78 Ratings, 1 Review) Average Rating:
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Good and Ok
Brad (Maine) 5/1/2012 7:01 PM
the system came and the box was all torn up but all the pieces seemed to be there except for two of the nuts for the muffler clamps. The pipe all went together well but the directions were lacking. with a little test fitting and measuring we were able to get the kit to fit nicely. The hardware is all very nice and the kit looks and sounds great. Very deep rumble on the LBZ. I would say that this is not a simply bolt on kit, but the parts are very good quality and with a little work it makes a great system.
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