




🔥 Elevate your Jeep’s roar and performance — don’t just drive, dominate! 🏞️
The Flowmaster American Thunder Axle-Back Exhaust System is a premium upgrade for 2007-2018 Jeep Wrangler JK models with 3.6L or 3.8L engines. Featuring 2.5" mandrel bent 409 stainless steel tubing and a polished 3" 304 stainless steel tip, it delivers a dyno-verified 5 HP and 7 Lb/Ft torque increase while enhancing ground clearance for off-road adventures. Designed for easy installation using factory hangers, it offers a moderate, signature Flowmaster sound that balances performance with daily drivability.
| Tip description | single_wall |
| Finish type | Polished |
| Manufacturer | Flowmaster |
| Package Dimensions | 77.47 x 25.4 x 25.4 cm; 3.06 kg |
| Manufacturer reference | FLM-817942 |
| Manufacturer Part Number | FLM-817942 |
| Item Weight | 3.06 Kilograms |
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