MBRP M1004S Quiet Tone T409 Stainless Steel 30 inch Muffler for 4 inch Inlet/Outlet | Universal

Features:

• Eliminates drone for quieter cabin experience
• Ideal for towing and long-haul applications
• 4" inlet and outlet universal fit design
• Dual-core tech balances flow and sound control
• Spiral louvered core reduces harsh exhaust tone
• Up to 10% quieter than standard mufflers
• 30-inch body fits most aftermarket 4" systems
• Tested on-road for over a year
• Fully compatible with MBRP and competitor systems
• Constructed from durable T409 stainless steel
• Corrosion-resistant for long-term durability
• Improves ride comfort without sacrificing performance

Cut The Drone And Cruise In Peace

If your truck’s exhaust has been giving you that constant, low-end drone on the highway or while towing, the MBRP Quiet Tone Muffler is exactly what you need to bring comfort back into the cab. Designed with long-haul driving in mind, this 30-inch muffler tones things down without taking the life out of your exhaust. It delivers a refined, quieter tone that won’t wear you out on long trips, especially if you’re pulling a trailer or hauling a load. The best part is, you still get that clean, aggressive rumble when you get into the throttle, just without the annoying hum inside the cabin. Whether you’re replacing a factory muffler or upgrading a loud aftermarket system, this universal-fit option makes a noticeable difference right away. It’s a direct fit for most 4-inch exhaust systems, including MBRP and other popular brands. With simple installation and a serious upgrade in sound quality, this muffler is a must-have for drivers who want their trucks to sound strong without being obnoxious.

Built With Proven Technology That Tames Sound And Boosts Flow

The MBRP M1004S Quiet Tone Muffler isn’t just quiet, it’s engineered to perform. Inside, it uses a high-flow spiral louvered core and dual-core design to balance backpressure and sound suppression, giving you strong performance with drastically reduced interior noise. Over a full year of real-world testing went into dialing in its design, and the results speak for themselves with up to a 10 percent dB drop compared to other performance mufflers. Whether you're cruising empty or towing up steep grades, the muffler helps eliminate drone without choking the exhaust system. It’s made from T409 stainless steel, which holds up well to heat, moisture, and road grime, making it a durable choice for daily drivers and work trucks alike. Measuring 30 inches in total length, it's a great fit for custom builds or as a direct swap for older M229 mufflers. And because it fits any 4-inch system, installation is straightforward and adaptable to nearly any setup. This is sound control done right, tested, tuned, and ready for anything you throw at it.

Fits: Universal

Notes:

• Universal fit for 4-inch exhaust systems.
• Measures 30 inches total length, verify space before install.
• Ideal for towing and long-distance driving applications.
• Significantly reduces drone for a quieter cabin experience.
• Dual-core design helps balance flow and sound control.
• Spiral louvered core designed for high-flow performance.
• Compatible with MBRP and other 4-inch mufflers.
• Constructed from corrosion-resistant T409 stainless steel.
• Provides up to 10% dB reduction over performance mufflers.
• Tested on-road for over a year before release.