Description
Flowmaster American Thunder Exhaust System (Dual Rear Exit)
09-18 Dodge Ram 5.7L Hemi 1500 & Ram 5.7L Hemi 1500
817477
The Flowmaster American Thunder Dual Rear Exit Exhaust System is designed for drivers who want a bold, aggressive exhaust tone combined with reliable performance. Constructed from 16-gauge mandrel-bent stainless steel tubing, this cat-back system flows into a dual-outlet 50 Series HD™ performance muffler that provides deep exterior sound while minimizing interior cabin drone.The system features dual 2.50-inch mandrel-bent tailpipes finished with polished 4.00-inch stainless steel tips, exiting straight out the back under the bumper for a muscular, factory-integrated appearance. Tailpipes are designed to clear the spare tire, maintaining full functionality while improving flow and style.Installation is straightforward, reusing the vehicle’s factory hanger locations and including all necessary hardware and detailed instructions for a quick at-home upgrade. Backed by Flowmaster’s Lifetime Limited Warranty, this system delivers long-lasting quality, enhanced performance, and aggressive styling.
- 16-Gauge Mandrel-Bent Stainless Steel Tubing – Durable construction for optimal exhaust flow.
- Dual 50 Series HD™ Performance Muffler – Deep, moderately aggressive exterior tone with minimal interior drone.
- Polished 4.00-Inch Stainless Steel Tips – Bold, high-quality finish for a muscular look.
- Dual Rear Exit – Exits straight under the rear bumper for factory-integrated styling.
- Factory Hanger Compatibility – Easy bolt-on installation with no cutting or welding required.
- Clears Factory Spare Tire – Full functionality retained.
- Lifetime Limited Warranty – Backed by Flowmaster quality and reliability.
- Complete Installation Kit Included – All hardware and instructions provided.






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