2021 Polaris® 850 RMK KHAOS QD2 155 2.75" Agile and Ultra Responsive on All-Mountain Terrain Discover KHAOS 155 The Perfect All-Mountain Sled Features may include: All-Mountain Architecture The most agile mountain sled - ever. Designed for all riding zones for a lively and dynamic backcountry experience. AXYS Chassis The raised AXYS chassis increases clearance and reduces drag to keep you on top of the snow. It is purpose-built for mountain riding and allows for faster and easier climbing and instantaneous lift to pop onto the snow faster. The aluminum over structure is lightweight and durable for all types of riding. Patriot 850 Engine Built to integrate seamlessly with the lightweight and agile Polaris chassis, Liberty engines feature class-leading power-to-weight ratios and set a new benchmark for ultimate performance with our complete line-up of powerful options. KHAOS Rear Suspension The new rear suspension provides transfer and traction for light handling and control and the best response in all riding zones. LOW ELEVATION Clutching Option Not all backcountry riding is performed at the high elevations of the Rocky Mountains. Polaris now offers a lower elevation calibration—factory direct—for deep snow riding in elevations less than 3000 feet. This option includes proper springs, clutch weights and helix for smooth engagement, drivability and maximum performance. Rider Balanced Control The AXYS platform features Rider Balanced positioning that delivers ultimate control for the rider for effortless riding. PRO-RMK React Suspension The PRO-RMK React Suspension provides riders with the most effortless ride in the deep snow. Experience less fatigue with the most predictable ride. It includes a 36"-38" stance, a sway bar designed for predictable handling, and forged a-arms and spindles optimized for strength and durability. Immediate Response The most agile all-mountain sled comes standard with WER Velocity Hi-Lo for the best of the best in various mountain conditions. Plus, the light and rigid design of the KHAOS Rear Suspension improves weight transfer for more control to deliver more power directly to the snow. New SnowCheck Exclusive Series 8 Track The all-new, SnowCheck exclusive, lightweight Series 8 track features a 3.5” pitch and optimized 2.75” lug for less mass and reduced inertia resulting in quicker response, instantaneous lift and optimum flotation for the ultimate in all-mountain performance.