Description
Bring aggressive sound and enhanced performance to your 2025 RAM 1500 with the Flowmaster American Thunder Direct-Fit Muffler Kit, designed specifically for models equipped with the 3.0L High Output engine. Engineered for both 2WD and 4WD configurations, this system is built using high-quality 409 stainless steel and delivers a bold, performance-driven exhaust note backed by dyno-proven power gains.
The system features a single 3.00-inch mandrel-bent inlet pipe feeding into a high-temperature black painted Flowmaster Super 40-based chambered muffler. The dual outlet setup connects directly to the factory tailpipes for a seamless fit, giving you a reliable and hassle-free installation using factory hangers and all included hardware.
With gains of up to 13 horsepower and 12 lb-ft of torque at the rear wheels, this muffler system not only sounds aggressive—it performs. The tuned Super 40 muffler provides a distinctive, deep exhaust tone that’s loud on the outside but still refined enough for daily driving. Whether you're towing or cruising, this direct-fit solution brings that signature Flowmaster performance to life.
Key Features:
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Constructed from 409 stainless steel for corrosion resistance and long-lasting durability
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Includes a 3.00-inch mandrel-bent inlet pipe for optimized exhaust flow
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Chambered Super 40-style muffler delivers a deep, aggressive exhaust tone
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Black painted finish adds a sleek, durable appearance
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Dual rear exit design connects directly to factory tailpipes
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Delivers dyno-tested gains of up to 13 horsepower and 12 lb-ft of torque
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Utilizes factory hanger locations for straightforward, bolt-on installation
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Includes all necessary hardware and installation instructions
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Covered by Flowmaster’s Limited Lifetime Warranty
Fitment:
Compatible with the following 2025 RAM 1500 models equipped with the 3.0L L6 High Output engine:
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2025 RAM 1500 Limited (183/3.0L L6 High Output)
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2025 RAM 1500 Tungsten (183/3.0L L6 High Output)
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2025 RAM 1500 Limited Longhorn (183/3.0L L6 High Output)
Supports both rear-wheel and four-wheel drive configurations.
Specifications:
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Product Type: Exhaust Muffler Assembly
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System Type: Direct-Fit Muffler
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Exhaust Series: American Thunder
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Muffler Series: Super 40
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Muffler Type: Reflection / Chambered
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Sound Level: Aggressive
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Main Tubing Diameter: 3.00 in
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Muffler Body Shape: Oval
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Muffler Body Length: 13.50 in
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Muffler Color: Black
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Material: 409 Stainless Steel
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Finish: High-Temperature Painted
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Exit Style: Dual Out Rear (DOR)
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Inlet Quantity: 1
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Outlet Quantity: 2
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Inlet Diameter: 3.00 in
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Outlet Diameter: 3.00 in (Slip-Fit)
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Mounting Style: Factory Hangers
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Overall Length: 59 in
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Warranty: Flowmaster Limited Lifetime Warranty
Upgrade your 2025 RAM 1500 with the Flowmaster American Thunder Direct-Fit Muffler and unleash aggressive sound, superior performance, and durable stainless steel construction built to last.
The standard shipping rate applies to orders within the continental United States. If you intend to place an order outside of the continental US, please reach out to support@x-ph.com for assistance.
