Flowmaster 818169 American Thunder Cat-Back Exhaust System Features:

• Fits PowerBoost or standard gas trucks with a factory dual exhaust option
• Max increases of up to 18 hp and 14 lb-ft of torque over the stock exhaust at the wheels
• 3-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
• Large 4.50-inch Black Ceramic Coated Tips fill the bumper cut out better than the factory tip
• Kit includes complete hardware and factory-styled hangers in the stock locations for an easy installation
• Super 40 Series muffler delivers a deep, aggressive to moderate performance tone and improves exhaust flow
• Lifetime Limited Warranty

Emissions Note:

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations

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