Description
Overview
The Flowmaster American Thunder Axle-back Exhaust System is engineered for drivers of the 2016-2024 Camaro SS & ZL1 with the 6.2L engine who want the best of both worlds: a powerful, very aggressive sound quality in Track mode paired with a deep, mellow tone for everyday driving. Built as a full stainless steel system, it delivers the character and presence Camaro owners crave while retaining the factory-inspired quad-tip look.
What sets this American Thunder system apart is its dual-muffler strategy. It features tandem 40 Series Delta Flow mufflers tuned for comfortable daily driving, along with a pair of race-proven Outlaw mufflers that actually increase the open exhaust sound when you switch into Track mode. Because the kit includes functional exhaust valves designed to work with your O.E. actuator motors, you can select between sound levels on demand, letting the car whisper on the commute and roar at the track.
Key Benefits
Every detail is finished for both performance and presentation. The system is capped with large quad 4.00-inch polished stainless steel tips featuring an embossed tip logo, replicating the factory quad NPP exhaust appearance. It mounts using the factory hangers and reuses the OEM valve actuators, making installation straightforward with all necessary parts and hardware included in the kit.
- Full stainless steel construction with a silver pipe finish and polished quad 4.00-inch tips
- Tandem 40 Series Delta Flow mufflers for a refined daily-driving tone
- Dual race-proven Outlaw mufflers that boost open exhaust sound in Track mode
- Functional exhaust valves that integrate with your O.E. actuator motors
- 3.00-inch muffler outlet diameter with dual tail pipes and embossed logo tips
- Uses factory hangers and reuses OEM valve actuators for a clean install
- Backed by Flowmaster’s Lifetime Limited Warranty
Fitment
This axle-back system is designed for an easy fit on both coupe and convertible 2016-2024 Camaro SS & ZL1 models equipped with the 6.2L engine and the factory NPP option, which is identified by the quad tips. It is CARB (California) compliant, carries Emission Code 5, and is included with the noted California Proposition 65 warning. A heat shield is not included, and the muffler is supplied as part of the complete kit.
If you are running a 6-speed manual with factory MDS valves, be sure to pair this system with the Scavenger Series X-pipe, #81083, which is designed to replace the factory mid-pipe and the flattened section of the factory tubing for a complete exhaust upgrade.














