The 2025 Ram 1500 is a powerful, capable truck, but for enthusiasts who want to take things a step further, Flowmaster® is proud to introduce two direct-fit muffler system options designed specifically for the High Output 3.0-liter Twin-Turbo Hurricane inline-six engine: the American Thunder® and Flow FX systems. Whether you’re looking for a deep, aggressive tone or a refined, performance-focused rumble, Flowmaster gives you the tools to make your Ram sound and perform exactly the way you want.
Each system offers a distinct sound profile, letting you customize your truck’s exhaust note to match your driving style and personality. The American Thunder® system delivers a bold, muscular tone that commands attention on the street or trail, while the Flow FX system provides a more moderate, yet still aggressive, sound that’s perfect for daily driving or long road trips. Both systems are engineered for direct-fit installation on 2WD and 4WD 2025 Ram 1500 models equipped with the High Output 3.0-liter TT Hurricane I6, ensuring compatibility without the need for modifications.
Shop 2025 Ram 1500 Flowmaster Muffler Kits here.
Flowmaster doesn’t just stop at sound—these systems are built for real performance. Constructed from high-quality 16-gauge, 409 stainless steel, they’re designed to withstand harsh conditions while maintaining optimal flow characteristics. The 3-inch mandrel-bent inlet pipes are precisely shaped to reduce backpressure and enhance exhaust pulse velocity, helping the turbocharged inline-six breathe more freely.
The result is dyno-proven gains of up to 21 horsepower and 18 lb-ft of torque at the rear wheels—meaning more responsive acceleration, improved towing capability, and a driving experience that feels significantly more alive. Whether you're hauling heavy loads, hitting the trails, or just want a stronger, more satisfying connection to your vehicle, Flowmaster delivers noticeable results you can feel every time you press the pedal.
These muffler kits offer a budget-friendly alternative to a full cat-back system while providing a more tailored fit and performance upgrade than a basic universal muffler install. They are designed with the DIYer in mind, utilizing the factory hanger locations and OE-style connections, so you can install the entire system in your driveway or garage with basic hand tools. Please note, while no welding is required, cutting of the factory exhaust system is necessary for proper installation.
With decades of experience building exhaust systems for enthusiasts, Flowmaster has earned a reputation for performance, quality, and innovation. These new muffler systems continue that legacy, offering Ram 1500 owners an exciting, affordable upgrade that enhances both sound and performance without compromising durability or drivability.
Pump up the volume, unlock hidden power, and give your 2025 Ram 1500 the signature sound it deserves—only with Flowmaster®’s American Thunder® and Flow FX direct-fit muffler systems.
