1967-1972 Chevy-GMC Truck Flowmaster American Thunder Dual Exhaust Crossmember Back System, Aluminized Steel, 1/2 Ton V8, 2WD

Exhaust Performance Upgrade. The Flowmaster American Thunder Dual Exhaust, X-Mbr Back, 1/2TV8, 67-72 delivers a distinctive aggressive to moderate sound that enhances the power and character of classic Chevy and GMC trucks. Designed to start at the crossmember and extend back, this exhaust system is engineered to improve exhaust flow and produce the iconic rumble enthusiasts desire. It is ideal for upgrading the factory exhaust while maintaining compliance with emissions regulations.

Construction and Appearance. This exhaust system features mandrel-bent 16-gauge aluminized steel tubing with a durable finish that resists corrosion and enhances longevity. It includes chambered Super 44 Series mufflers that produce a deep and powerful tone. The system offers four tailored tailpipe exit options for aesthetic and functional preferences, providing both style and clearance for lowered vehicles.

Installation. Installation is moderately straightforward, with all necessary hangers and hardware included for a complete setup. The system uses weld-on inlet connections and typically does not require drilling, making it suitable for experienced DIYers and professional installers alike.

Warranty. This exhaust system is backed by a three-year limited warranty, ensuring confidence in material and workmanship quality.

Application. Fits 1967-1972 Chevrolet and GMC C10 and C15 1/2 Ton 2WD trucks equipped with V8 engines. Suitable for vehicles with coil spring suspension and both short and long wheelbases. Does not fit trucks requiring header reducers or downpipes for factory manifolds.

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