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2018 Polaris 800 Pro-RMK 155

Confidence inspiring Polaris mountain machine rises to the top
2018 Polaris 800 Pro-RMK 155
You can’t keep a good sled down, and with the extreme buoyancy of the Polaris 800 Pro-RMK, trying to hold this machine in the snow is like standing underwater on a swimming pool noodle. With a little forward motion, the sled zips right to the top.

■ Floats like a life boat
Of all the sleds in our fleet this last year, the RMK is built for getting on top of the snow in a hurry. And, once out, it levels quickly to give the rider stability and control. Even with the shorter 155 track, this machine pops to the top. Once on top of the snow, deep powder and tight trees are your playground.

The AXYS chassis is light and nimble. The slim design aids the rider with steep side-hilling and maneuverability when taking complicated lines. Polaris succeeded in designing a balanced chassis that is functional, and over the season we learned to appreciate its comfort features as well. The bar and seat height complement a variety of rider sizes and riding styles. The electric start is an appreciated feature too.

The sled reacts instantaneously to rider input and the 800’s robust mid-range sweet spot allows the rider to boondock with ease. This broad sweet spot, with the crisp throttle and light-effort control serves to build rider confidence. Additionally, the track has some bite and creates a level surface for the track to run on, making it easier for newbies and veteran riders alike to cut across the mountain without washing out. The various components of chassis, throttle and track worked together to allow some of the less experienced riders in our group to undertake terrain they previously found unattainable.

■ Easily maintained
The RMK is a low maintenance sled and can definitely be considered a Mary Ann on your Gilligan’s Island of upkeep. The sled didn’t experience any needed repairs, had excellent belt life and provided a season of endorphin-filled days for the Western team. Although, to continue the Gilligan’s Island metaphor, the sled might equally be compared to the Professor with its smart features. Specifically, the GPS Command Center has the best display technology in the industry.
2018 Polaris 800 Pro-RMK 155
The PIDD (Polaris Interactive Digital Display) is easy to read, has the most functions and provides the rider with easy access to an array of information, from location and speed to diagnostic warnings and riding conditions. As a tech guy, this feature should not be overlooked. Having the Bluetooth functionality that allows the sled to communicate with cellphones was great, too.

The 800 has impressive linear power from top to bottom. This may be due in part to the improved thermostat in the 800 Cleanfire H.O. Engine. Polaris touts a 15-degree lower operating temperature (110 F vs. 125 F). The Western team was impressed with this advancement and noticed the value. A lower operating temperature gives the sled an improved overheating margin and more stable engine operation. The clutching out of the box on this machine is superb, too—no need for adjustments.

The Walker Evans suspension, while valued as a sled improvement, was something the Western team still found to be lacking. They felt little difference on the quick adjusts from soft to hard. While the ride might be different depending on the rider, our days included a trail to get to the steep and deep. It would be nice to have a suspension able to go from one extreme to the other with a quick adjust. It should be noted, however, the suspension was helped with a slight spring adjustment.

■ Final verdict
Polaris boasts this sled as the lightest, strongest and most flickable. Some don’t like the word “flickable,” but we found the sled to be as claimed. It is light, with a great power-to-weight ratio and is strong through steep and deep tree country. While flickability to me is defined as the distance of my mouthy teenager to my snapping middle finger on her forehead; this sled meets Polaris’ definition of the word by being highly maneuverable and responsive.
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