Flowmaster Exhaust Upgrades for 2025 RAM 1500 3.0L High Output – FlowFX & American Thunder Mufflers
18th Jun 2025
Flowmaster Flow FX Direct Fit Muffler Fits 2025 RAM 1500 3.0L High Output, FlowFX Direct-Fit muffler exhaust system, 409 stainless steel - 718203
Order link:
Elevate the performance and sound of your 2025 RAM 1500 with the Flowmaster FlowFX Direct-Fit Muffler Kit, engineered specifically for trucks equipped with the 3.0L High Output engine. Designed for both 2WD and 4WD configurations, this performance muffler system offers a powerful, deep exhaust tone with dyno-proven gains of up to 21 horsepower and 18 lb-ft of torque at the rear wheels.
Constructed from high-grade 409 stainless steel for long-lasting durability, the system features dual 3.00-inch mandrel-bent inlet pipes feeding into a FlowFX straight-through muffler, designed to enhance airflow and deliver a moderate yet aggressive exhaust note. The dual-outlet design seamlessly connects to the factory tailpipes, offering a hassle-free installation using stock mounting points and hardware.
Whether you're towing, hauling, or cruising the open road, this Flowmaster FlowFX system adds performance and character to your RAM without the need for complicated modifications. Backed by Flowmaster’s Limited Lifetime Warranty, it's a dependable, high-impact upgrade for performance enthusiasts.
Key Features:
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409 stainless steel construction for strength, rust resistance, and long-term durability
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Direct-fit design connects to factory tailpipes using OEM hangers and hardware
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Includes a FlowFX straight-through muffler for deep, moderate performance tone
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Dual 3.00-inch mandrel-bent inlet tubing enhances exhaust flow
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Dyno-proven gains of up to 21 horsepower and 18 lb-ft of torque at the rear wheels
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Oval muffler design with brushed natural finish for a clean, OE-style appearance
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Easy bolt-on installation – no cutting or welding required
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Backed by Flowmaster’s Limited Lifetime Warranty
Fitment:
Fits the following vehicles 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)
Compatible with both 2WD and 4WD drivetrain configurations.
Specifications:
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Muffler Type: Absorption (FlowFX Series)
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Material: 409 Stainless Steel
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Main Tubing Diameter: 3.00 in
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Inlet Diameter: Dual 3.00 in
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Outlet Diameter: Dual 3.00 in (Slip-Fit)
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Muffler Body Dimensions: 10.75 in (Length) x 10.00 in (Width) x 5.00 in (Height)
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Overall System Length: 59 in
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Sound Level: Moderate – Aggressive Exterior Tone, Comfortable Cabin Sound
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Exit Style: Dual Out Rear (DOR)
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Finish: Natural Brushed Stainless Steel
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Mount Type: Factory-Style Hangers
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Installation: Direct Bolt-On Using Factory Locations
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Warranty: Lifetime Limited Warranty
Upgrade your 2025 RAM 1500 with the Flowmaster FlowFX Direct-Fit Muffler and experience enhanced performance, a bold exhaust note, and quality-built durability that lasts.
Flowmaster American Thunder Direct Fit Muffler Fits 2025 RAM 1500 3.0L High Output, American Thunder Direct-Fit muffler exhaust system, 409 stainless steel - 818204
Order link:
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.