American Thunder Systems are designed with the latest Technology to get the most performance from Flowmaster Mufflers. Systems will increase acceleration and passing power while providing better fuel mileage. All tubing is mandrel bent for the best fuel flow and made of aluminized steel to last for years. All while porviding that famous Flowmaster rumble!

Systems Includes:

• Performance Flowmaster Mufflers

• All Pipes with Hangers Attached

• Clamps and Mounting hardware

• Detailed Installition Instructions

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