All RMK models are powered by two-stroke engines. Attack the technical terrain with power and response, with a new level of effortless control with the lowest inertia engine in the lineup. The Polaris RMK is a series of snowmobiles made by Polaris Industries. PATRIOT 9R ENGINE: The latest factory mod engine - a 900cc Patriot delivering lightning fast response and lightweight power.RMK KHAOS REAR SUSPENSION: The new rear suspension geometry provides transfer and traction for light handling and control and the best response in all riding zones.It includes a 36'-38' stance, a sway bar designed for predictable handling, and forged a-arms and spindles optimized for strength and durability.

Sprintfire employed the 2-cylinder, 339cc TC340E Fire Burst engine manufactured by Kawasaki. Its specifications listed the overall weight at 330 lbs, which was quite impressive. Effortlessly initiate sidehills and experience less fatigue with the most predictable ride. The main highlight of the Sprintfire John Deere snowmobile was the compact chassis and lightweight design, thanks to the direct drive system. RMK REACT SUSPENSION: The RMK React Suspension provides riders with the most precise and effortless ride in the deep snow.SHORT, TAPERED TUNNEL: The all-new Matryx Slash short, tapered tunnel enables the sled to dig deeper in the snow without getting stuck, maintaining forward momentum and traction in the steepest, deepest conditions.The Matryx Slash is 22% lighter through the snow, delivering ultimate control and reduced fatigue. LIGHTER THROUGH THE SNOW: A lighter snowmobile is easier to control, and reduces fatigue throughout the day of riding.Not only is the dry weight reduced, the real world weight of the sled through the snow is reduced. CENTRALIZED COOLING SYSTEM: The lightweight cooling system reduces ice and snow build up, working with the short, tapered tunnel.Through drag reduction, the control of the sled is greatly enhanced by keeping the sled out of the snow. SHORT, TAPERED TUNNEL: The Matryx Slash features a short, tapered tunnel that has significantly reduced drag through the snow.

Polaris rmk 900 specs