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2019 Polaris 850 SKS 155 SnowCheck Select

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LIGHTEST. STRONGEST. MOST FLICKABLE.

The SnowCheck-exclusive 850 SKS 155 – powered by the all-new Polaris® 850 Patriot™ engine – is the most versatile deep snow crossover sled. This sled features the legendary RMK® Rider Balance® and agility, and with its bogey wheels and bulkhead cooler, it maintains proper engine temperature for mixed use riding in all snow conditions. It is perfect for riders that use the trails to get to deep snow.

Immediate Response

  • LIGHTWEIGHT: Polaris snowmobiles are the lightest sleds on the mountain. Polaris® mountain sleds have always been light AND rigid, and Polaris has added strength & durability while reducing weight on the RMK® AXYS® platform. Polaris uses design optimization software to analyze the loads and stress points for various systems and components of the snowmobile which allows the team to design lightweight yet durable snowmobiles. Providing riders with instantaneous lift, Polaris sleds help riders get up on top of the snow faster due to the lighter weight, increase in power from the 800 H.O. Cleanfire® Engine, Polaris-exclusive track designs and the raised chassis.
  • FORGED ALUMINUM A-ARMS: The one-piece, forged a-arms are lighter (approximately 1.5 lb. lighter) while providing optimal strength. Forging is widely used and proven through the automotive industry. This design reduces unsprung mass leading to a better ride quality and increased maneuverability.
  • POWDERTRAC™ RUNNING BOARDS: The PowderTrac™ running boards have been developed for maximum snow clean out and maximum strength. Built from extruded aluminum with bonded cast lugs, they boast an open area of over 50% and integrated traction that is machined in for sure footed performance. There is now additional open space at the back of the boards by the rear pad to reduce snow build up.

Instantaneous Lift

  • PATENTED RAISED AXYS® RMK® CHASSIS: The lightweight, rigid rear suspension design features revised geometry to control pitch. This improves weight transfer, delivering better control and a more compliant ride. The rigid suspension delivers power directly to the snow. Off-trail, riders will notice improved weight transfer while maintaining the approach angle. On-Trail, riders will notice a more compliant and comfortable ride. The rear suspension features a rail design that helps lift the rear skid while driving it forward.
  • REAR SUSPENSION: The lightweight, rigid rear suspension design features revised geometry to control pitch. This improves weight transfer, delivering better control and a more compliant ride. The rigid suspension delivers power directly to the snow. Off-trail, riders will notice improved weight transfer while maintaining the approach angle. On-Trail, riders will notice a more compliant and comfortable ride. The rear suspension features a rail design that helps lift the rear skid while driving it forward.
  • 800 CLEANFIRE® H.O. ENGINE: Developed in conjunction with the AXYS platform, the proven 800 Cleanfire® H.O. Engine delivers class-leading acceleration. The integrated mounting position optimizes the balance of the chassis. Featuring 3-stage electronically-controlled exhaust valves, electronic oil pump, thermostat with bypass warms up to operating temperature 40% faster and improves durability, high-efficiency intake and exhaust, VForce reeds, lightweight crankshaft, throttle body is lighter weight and reduces throttle effort, grooved piston.
  • WALKER EVANS® PIGGYBACK CLICKER SHOCKS: The Walker Evans® Piggyback Clicker Shocks with compression adjusters and remote reservoirs offers the best performance across the broadest range of conditions.

More Features

  • PRO-LITE SEAT: Mountain snowmobiling requires a different seat design and that is what Polaris delivers. The seat is shorter to allow you to easily swing a leg and hop over from one side of the snowmobile to the other.
  • LED LIGHTS: All models built on the AXYS® platform feature standard LED headlights. LED headlights deliver the industry’s best lighting. Nearly 1 lb. lighter and high beams are 80% brighter than incandescent lighting. Color temperature or output of the lights (the “whiteness” of light, reported in Kelvin) is 5,000 K, closely matching daylight. LED headlights last the entire lifetime of the sled - a major durability enhancement over traditional incandescent headlights which experience filament burn out. For constant visibility and enhanced safety, the low beams remain on at all times. Even when the high beam is activated, there is never a period of no light.
  • MOUNTAIN HOOP: Re-designed in 2016, the mountain hoop is more ergonomic and has been moved down 2.5 in. to prevent hitting the rider in the chest when in steeper terrain. Now a one-piece stylized design, the mountain hoop is made of a durable polyurethane material.
  • ADDITIONAL SKS COOLING: The SKS features standard bogey wheels and a bulkhead cooler to better maintain proper engine temperature for mixed use riding in all snow conditions.
  • BRAKES: Lightweight RMK brakes feature a fixed 2 piston opposed caliper design for an improved and quicker braking response and feel. The brake pad material features higher thermal properties to provide more optimal wear over time.
  • MESSAGE CENTER GAUGE: Informative and easy to read, this instrumentation keeps a rider aware of sled operating conditions and provides a wealth of additional data. Easily viewable LCD screen - 4.3 in. diagonal measurement. Scrolling message center keeps rider informed. Increased number of tell tales by over 60%. Large buttons can be operated with gloved hands. Brightly lit display is easily readable in all light conditions.
  • POLARIS INTERACTIVE DIGITAL DISPLAY: Exclusively from Polaris - the most advanced instrumentation in snowmobiling. This 4.3 in. high resolution, full color, LCD digital display provides a rider with information including 1) Sled performance - Speedometer, tachometer, dual tripmeters, average speed, max speed, engine/trip hours & odometer. 2) Sled operating conditions - Coolant temperature, diagnostics & maintenance warnings. 3) Riding conditions - Air temperature, time of day in 12 or 24-hour clock format. 4) Bluetooth™ functionality - Enables the gauge to communicate with the rider’s cell phone and provide notification of incoming calls or texts. Displays phone battery & signal strength. 5) GPS / Mapping Capability - A compass is standard, & full-featured GPS can be installed to provide directions & information about services such as fuel, restaurants, lodging & Polaris dealerships. Customize the GPS to operate with North Up or Course Up navigation depending on your preference. Ride Planning Feature enables you to plan a ride using Ride Command, save it as a GPX file, and transfer it to the display through the USB interface.

Rider Balanced™ Control

  • LEGENDARY RMK BALANCE: The patented AXYS® chassis delivers the RMK’s renowned perfect balance that riders have come to expect. The AXYS RMK offers increased, ultimate control and a more compliant ride.
  • AXYS® BODY PANEL DESIGN: The AXYS® RMK® features a compact body panel geometry and design that helps give the sled the best lean angle in the industry allowing it to hold even the steepest side-hill lines. RMK does not "Panel Out" like other competitors.
  • NARROW, ADJUSTABLE FRONT END: Narrow 39 - 41 in. adjustable front end - ideal for setting up for more stability or ultimate performance while tree-riding and boondocking.

General Information

Manufacturer Polaris
Model Year 2019
Model 850 SKS 155 SnowCheck Select
Model Code S19EFS8RS
Color Black Pearl / Sky Blue

Dimensions

Length Overall - 131 in. (332.75 cm)
Height Overall - 49.1 in. (124.7 cm)
Width Overall - 46.5 in. (118.1 cm)
Weight Estimated Dry - 445 lb. (202 kg)

Engine & Drivetrain

Shocks

Front - Walker Evans® comp. adj. piggyback needle

Front Track - Walker Evans® comp. adj. piggyback

Rear Track -Walker Evans® Comp. Adj. Piggyback

Front Suspension

AXYS® RMK® adjustable

Travel - 9 in. (22.9 cm)

Rear Suspension

AXYS® RMK®

Travel - 16 in. (40.6 cm)

Engine Liquid-cooled, 2-cylinder with electric start
Displacement 795 cc
Bore x Stroke 85 x 70 mm
Carburetion Cleanfire® Injection
Ignition Clean-fire 3D
Fuel Capacity 11.5 gal. (43.5 l)
Clutch

Drive - P-85

Driven - TEAM® LWT

Exhaust Single, 3-stage VES with smart actuator
Brakes Disc - AXYS™ LWT
Powertrain Drive System Type - Chaincase
Fuel System Cleanfire® Injection

Operational

Skis Gripper
Ski Stance 39 - 40 - 41 in. (99.1 - 101.6 - 104.1 cm)
Track LxWxH

Peak - 155 x 15 x 2.25 in.

Series 5.1 - 155 x 15 x 2.4 in.

Series 6 - 155 x 15 x 2.6 in.

Other

Additional Colors

Black Pearl / Black

Lime Squeeze / Black Pearl

Sky Blue / Black Pearl

Black Pearl / Lime Squeeze

Black Pearl / Orange Burst

Pink Ribbon Riders®

Indy Red / Black Pearl

Orange Burst / Black Pearl

Black Pearl / White Lightning

Black Pearl / Sky Blue

Founder’s Edition Black Pearl / Gold

Warranty Standard - 12 months

Polaris recommends that all riders take a safety training course. Do not attempt maneuvers beyond your capability. Always wear a helmet and other safety apparel. Never drink and ride. ©2017 Polaris Industries Inc.