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Engines Built for Conversations

Your Malibu Boats™ audio has never sounded better, but we didn’t change a thing on the sound system itself. The key is the new Malibu Monsoon M5Di™ and Malibu Monsoon M6Di™ direct-injection engines, which are whisper quiet. Having a quiet engine may not seem like a big deal, but it’s the best thing you can do to improve your sound system. Besides crystal clear audio coming out of our custom-tune Wet Sounds speakers, you can have a conversation at a normal level while running down the lake at full speed, no more strained vocal cords from older, louder engines.

The foundation to a quiet engine is direct injection, which shoots fuel into the combustion chamber at higher compression, making for a more complete, controlled and quiet burn. This is only possible with a direct injection engine. You either have it or you don’t, and Malibu’s new Monsoon line has it.

Malibu Monsoon Engine: Noise Reduction

Direct Injection = Quiet Engines

Watch and see why Malibu Monsoon Engines designed a quieter engine allowing you to have full conversations while running on the water.


But Malibu didn’t stop there. Acoustic foam fills key areas, reducing or eliminating the engine noise and vibration that contribute to that exhausted feeling at the end of the day. Additionally, the new Monsoons feature cast-iron manifolds that wrap entirely around the cylinder heads, creating a noise barrier that keeps the sound in the engine compartment where it’s meant to be, rather than circulating out around the lounge.

To accomplish this, Malibu purchased a 70,000 square foot building next door to its boat building plant in Tennessee. It was then converted from an empty shell to a state-of-the-art engine manufacturing plant with everything necessary to take an engine from a block to the most tech-forward engine the towboat segment has ever seen. Thousands of hours went into research and development, and besides the performance improvement, emissions reduction, fuel-savings and reliability, massive reduction of the overall noise, vibration and harshness was part of the goal. In fact, the new Monsoon line is over 10 decibels quieter than most towboats on the water today.

When you’ve got the whole crew onboard and you’re pulling a surfer with full ballast, your engine is working hard, but with Malibu’s new M5Di and M6Di, you don’t have to hear it working. Whether you’re going for a new personal best in the TXi or dialing in surf transfers on your 25 LSV, you’re going to love the sound of a quieter day on the lake.

If you want to experience an on-water sound system like never before, contact your local dealer to get out on a Malibu or Axis today.

To find out more about the benefits of Malibu’s new line of Monsoon direct injection engines, check out our other articles on performance, emissions and reliability.

Malibu Monsoon Engines

Want to know more? Click below to learn more information on the Malibu Monsoon M5Di and M6Di.

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