2025 Polaris 850 RMK KHAOS 155

The 2025 Polaris 850 RMK Khaos 155 is a high-performance mountain snowmobile built on the MATRYX platform, featuring a powerful 850 Patriot engine. It is specifically tuned for a more playful, dynamic, and agile riding style in the backcountry, prioritizing lift and agility over the pinpoint precision of the PRO RMK.   

 Engine and performance

• Engine: A liquid-cooled, 840cc Patriot 850 2-stroke engine with Cleanfire® injection delivers instant throttle response and strong power.
• Optional Power: Through the spring-order SnowCheck program, riders could upgrade to the lighter Patriot 9R or the powerful turbocharged Patriot Boost engines.
• Drive System: The QuickDrive2™ system is a low-inertia drive for quick response and excellent deep-snow maneuverability.
• Clutching: Features a P-85 primary clutch and a TEAM® LWT driven clutch.
• Starting and reverse: PERC® electronic reverse is standard, and electric start is an available option. 

Chassis and suspension

• Platform: The lightweight and narrow MATRYX platform provides better rider connection and improved agility. For 2025, it features a 1-inch lower seat, redesigned running boards for better clean-out, and a new throttle system for improved control.
• Rear Suspension: The RMK Khaos Rear Suspension is specifically designed for a playful feel, emphasizing weight transfer and traction for light, agile handling. It offers 16 inches of rear travel.
• Front Suspension: The RMK React front suspension offers a predictable feel and includes a narrow, adjustable ski stance (36–38 inches).
• Shocks: Ultra-premium Walker Evans® Velocity Hi-Lo shocks with remote reservoirs are standard on the front and rear. They feature high- and low-speed compression adjustments for dialing in the ride.
• Track: Track options include a 15 x 155 x 2.75-inch Series 8 or a 15 x 155 x 3.25-inch Series 9. 

Technology and features

• Instrumentation: Riders can choose between the standard MessageCenter Display or the upgraded 7S Display with RIDE COMMAND technology, which includes integrated GPS, trail maps, and Group Ride tracking.
• Lighting: New for 2025, lightweight LED headlights contribute to a reduced overall weight and provide superior visibility.
• Controls: Includes standard high/low hand and thumb warmers and a 5-inch ProTaper handlebar.
• Seating: A lightweight, single-rider MATRYX Comfort seat is standard. 

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