Flowmaster American Thunder Cat-Back For GM Silverado/Sierra 6.0/8.1L (01-07) (17328)

The Flowmaster American Thunder Cat-Back Exhaust System is a performance exhaust upgrade designed for 2001-2006 (2007 Classic) Chevrolet Silverado and GMC Sierra 2500HD/3500HD trucks equipped with 6.0L or 8.1L engines. Constructed with aluminized steel and featuring a dual inlet 50 Series Big Block muffler, this system provides a deep, powerful exterior tone while maintaining a moderate interior sound. It enhances throttle response, power, and fuel efficiency, offering a subtle custom appearance with improved sound quality. The system includes a large aluminum heat shield, stainless clamps, and a custom bent 3.50-inch tailpipe that exits behind the right rear wheel, ideal for towing. The 4.00-inch polished stainless steel tip embossed with the Flowmaster logo completes the look, ensuring durability and style.

Designed for direct bolt-on installation, this exhaust system attaches to the back of the catalytic converter and uses factory hanger locations for easy setup. It is suited for street use, daily driving, and performance enthusiasts seeking a deep, aggressive sound without being overly loud. The kit includes all necessary hardware and instructions for a trouble-free installation. Covered by a 3-year Limited Warranty, this system offers a reliable upgrade for trucks that demand improved sound, response, and overall performance.