nnProduct Description:nnThe Banks 4-inch Monster exhaust cat-back system flows up to 122% better than stock and virtually eliminates backpressure. Formed of stainless, heavy-wall tubing with constant-diameter bends to maximize airflow and lower exhaust gas temps. Banks replaces the factory’s restrictive muffler with a polished-stainless Monster muffler featuring a straight-through 4-inch diameter path that flows up to 129% better than stock.nnThe Banks-designed expansion chamber dissipates the annoying mid-range exhaust drone that accompanies most straight-through mufflers. The monster muffler utilizes spun ceramic, very-high-temperature packing and delivers an authoritative–but never intrusive–exhaust sound.nnAs well as the 5-inch polished rolled-edge tip has an adjustable clamp for positioning on the tailpipe. Get it in your choice of chrome-over stainless or high temp black! (And to help keep it looking good, there’s a 1/2 inch air gap to keep heat from tarnishing the finish.)nn nnFits:n

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• 2004-2007 Dodge 5.9L Cummins

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• Mandrel bent Stainless Steel construction

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• Virtually eliminates backpressure

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• Lowers exhaust gas temps

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• Dramatically improves flow

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• Maximum Airflow

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• 4-inch constant-diameter system

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• Flows up to 122% better than stock

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• Cat-Back System

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• 5-inch CHROME tip

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• Fits 325-hp Engine Crew cab, Long bed

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