2025 Polaris® Boost RMK KHAOS 155 Shadow Gray / Gloss Black

The 2025 Polaris Boost RMK KHAOS 155 represents the pinnacle of high-performance mountain snowmobiling, seamlessly blending raw turbocharged power with unmatched agility and playfulness. Built on the refined and rider-forward Matryx RMK platform, this sled is engineered for those who don’t just ride in the backcountry—they thrive in it. From steep chutes and powder-filled tree lines to natural jumps and sidehills, the Boost RMK KHAOS 155 transforms every ride into a high-adrenaline experience.

At the heart of the machine is the Polaris Patriot Boost engine, a factory turbocharged powerplant that delivers instant throttle response and consistent horsepower across all elevations. Whether you're carving at sea level or charging above 10,000 feet, the Boost engine maintains peak performance without hesitation. This consistent and reliable power gives riders the confidence to explore the most challenging and untouched terrain without worrying about losing momentum or sacrificing control.

What sets the KHAOS version apart from the standard RMK models is its playful, rider-responsive nature. The unique rear suspension geometry provides a more dynamic and lively ride, allowing the sled to pop up effortlessly and respond instantly to rider input. It’s ideal for snowmobilers who enjoy a more freeform, expressive riding style—those who like to hit natural features, throw the sled around, and make the most of every inch of the mountain. The 155-inch Series 8 track with 2.75-inch lugs offers an excellent balance of flotation and traction, allowing the sled to stay on top of deep snow and deliver maximum lift with minimal effort.

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