Flowmaster GM 6.6L CCB American Thunder Cat-Back For GM 2500HD/3500HD (817933)

The Flowmaster American Thunder Cat-back exhaust system is designed for the 2020-2026 Chevy Silverado and GMC Sierra 2500HD and 3500HD trucks equipped with the 6.6L gas engine. This performance exhaust system enhances sound and power, delivering a moderate to aggressive tone both inside and outside the vehicle. Constructed with stainless steel components, it features a 50 Series HD muffler and large dual 3.00-inch mandrel-bent stainless steel tailpipes. The system offers configurable exit options, either dual straight out the back or dual out the sides behind the rear wheels, making it suitable for towing applications. Finished with large 4.00-inch polished stainless steel tips, it combines durability with a polished appearance. The system is emissions-legal, easy to install, and includes all necessary hardware, backed by a lifetime limited warranty.

This bolt-on system is specifically designed for Crew Cab, Standard Bed (6.5 ft.) models only. It fits 2020-2026 Chevrolet Silverado and GMC Sierra 2500HD and 3500HD trucks with the 6.6L gas engine, serving as an upgrade or replacement for stock exhausts. Ideal for street driving, towing, and performance enthusiasts, it provides improved exhaust flow and a commanding sound profile. The system’s configuration options make it versatile for different applications, and it is engineered for straightforward installation with all required parts included. This exhaust system enhances both the sound and performance of compatible trucks, ensuring a durable, emissions-compliant upgrade.