This Crossmember-Back American Thunder system is custom designed for high horsepower and large cubic inch engines in 1968-1972 GM A-Bodies with a V8 engine. It's a true-dual exhaust system featuring all mandrel-bent 3.00-inch aluminized steel tubing with a built-in H-pipe crossover assembly flowing into a pair of large cased Super 40 Series performance mufflers for maximum power and a deep powerful aggressive exhaust note.

The large 3.00-inch mandrel-bent tailpipes are custom bent to tuck up high above the rear end and exit with a slight turn down under the rear bumper. The system is constructed from aluminized steel and includes all necessary hardware and hangers for installation and is covered by our 3-year Limited Warranty. This system is also available in Stainless steel and comes with a Lifetime Limited Warranty, check out part# 817200.

• Super 40 Series Performance Mufflers for Deep Powerful Sound
• H-pipe Crossover for Maximum Power and Deep Tone
• Mandrel-bent 16-gauge Aluminized Steel Tubing
• Includes Hangers and Hardware for Installation
• Crossmember-Back True Dual Exhaust System
• Does Not Include Header Reducers or Factory Manifold Downpipes
• Aggressive Exterior Exhaust Tone
• Large Dual 3.00-inch Tubing
• 3-year Limited Warranty