01-07 GM DURAMAX MBRP PLM Series 4" Down Pipe Back, Single, No Muffler Exhaust - (All Crew & Ext. Cabs) (Off-Road) - S6004PLM

01-07 GM DURAMAX MBRP PLM Series 4" Down Pipe Back, Single, No Muffler Exhaust - (All Crew & Ext. Cabs) (Off-Road) - S6004PLM

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MBRP's PLM Series exhaust systems feature a muffler delete pipe that takes the place of your muffler, providing the ultimate in exhaust flow and sound. By doing so, they increase both horsepower and torque and improve fuel economy. The systems are manufactured from heavy-duty steel pipe with an aluminized coating for maximum protection. Their specially designed 2-piece tailpipe and bolt-on hangers allow for a simple, straightforward installation. These PLM Series exhausts are available in a variety of sizes, styles, and configurations for fitment on specific vehicle applications.