2020 Polaris 850 PRO-RMK 155 SC 3 in.
2020 Polaris 850 PRO-RMK 155 SC 3 in.

Specs

General Information

Manufacturer
Polaris
Polaris
Model Year
2020
2020
Model
850 PRO-RMK 155 SC 3 in.
850 PRO-RMK 155 SC 3 in.
Model Code
S20EFM8RS
S20EFM8RS
Color
Anniversary Edition Navy Blue
Anniversary Edition Navy Blue

Dimensions

Length
Overall - 131 in. (332.75 cm)
Overall - 131 in. (332.75 cm)
Height
Overall - 49.1 in. (124.7 cm)
Overall - 49.1 in. (124.7 cm)
Width
Overall - 43.5 in. (110.5 cm)
Overall - 43.5 in. (110.5 cm)
Weight
Estimated Dry - 428 lb. (194 kg)
Estimated Dry - 428 lb. (194 kg)

Engine & Drivetrain

Engine
SnowCheck-Exclusive 850 Patriot
SnowCheck-Exclusive 850 Patriot
Cylinders
2
2
Cooling
Liquid
Liquid
Displacement
840 cc
840 cc
Bore x Stroke
85 x 74 mm
85 x 74 mm
Starting
Manual Pull
Manual Pull
Carburetion
Cleanfire Injection
Cleanfire Injection
Ignition
Patriot 3DS
Patriot 3DS
Drive System
Chaincase
Chaincase
Drive Clutch
P-85
P-85
Driven Clutch
TEAM LWT
TEAM LWT
Reverse
PERC
PERC
Exhaust
Single, 3 Stage VES with Smart Actuator
Single, 3 Stage VES with Smart Actuator
Brakes
Disc - AXYS RMK LWT
Disc - AXYS RMK LWT
Fuel Capacity
11.5 gal. (43.5 l)
11.5 gal. (43.5 l)

Operational

Handlebar
Type - Low-Rise ProTaper
Type - Low-Rise ProTaper
Seating or Rider capacity
Pro-Lite - Single person
Pro-Lite - Single person
Skis
Gripper
Gripper
Ski Stance
36, 37, 38 in. (91.4, 93.9, 96.5 cm)
36, 37, 38 in. (91.4, 93.9, 96.5 cm)
Track LxWxH
155 x 15 x 3.0 in. Series 7
155 x 15 x 3.0 in. Series 7

Other

Additional Colors

Black Pearl

Ghost Gray / Orange

White Lightning

Sky Blue / Gray

Pink Ribbon Rider

INDY Red

Black Pearl / Indy Red

Black Pearl / Sky Blue

Ghost Gray / Lime Squeeze

Sky Blue / Lime Squeeze

Anniversary Edition

Black Pearl

Ghost Gray / Orange

White Lightning

Sky Blue / Gray

Pink Ribbon Rider

INDY Red

Black Pearl / Indy Red

Black Pearl / Sky Blue

Ghost Gray / Lime Squeeze

Sky Blue / Lime Squeeze

Anniversary Edition

Includes

Hand & Thumb Warmers - Adjustable

Windshield - AXYS Low 7 in. Black

Hand & Thumb Warmers - Adjustable

Windshield - AXYS Low 7 in. Black

Suspension

Shocks
Walker Evans Monotube
Walker Evans Monotube
Front Suspension

AXYS RMK React

Travel - 9 in. (22.9 cm)

AXYS RMK React

Travel - 9 in. (22.9 cm)

Rear Suspension

AXYS RMK

Travel - 16 in. (40.6 cm)

AXYS RMK

Travel - 16 in. (40.6 cm)

Features

Immediate Response

  • POWDERTRAC® RUNNING BOARDS - 600 AND 800 MODELS: 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.
  • POWDERTRAC® XT RUNNING BOARDS - 850 MODELS: The lightweight PowderTrac® XT Running Boards were developed for extreme riders with new geometry for improved sidehilling and deep snow capabilities. The improved ergonomics maintain usable space for the rider and traction at the rear of the boards.
  • LIGHTWEIGHT: Polaris® snowmobiles are the lightest sleds on the mountain. They have always been light and rigid with added strength and durability while reducing weight on the RMK® AXYS® platform. Providing riders with instantaneous lift, Polaris sleds help riders get up on top of the snow faster.

Instantaneous Lift

  • 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 improved sidehilling, faster and easier climbing, and instantaneous lift allowing the sled to pop onto the snow faster. The aluminum over structure is lightweight and durable for all types of riding. Taller spindles increase clearance to reduce drag.
  • LIBERTY® ENGINE CHOICES FOR EVERY RIDER: 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.
  • 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.
  • WALKER EVANS® SHOCKS: The PRO-RMK® 155 comes with premium Walker Evans® Piggyback Shocks or Monotube Shocks. The Walker Evans® Piggyback Shocks with compression adjusters and remote reservoirs offer the best performance across the broadest range of conditions. The Walker Evans® Monotube Impact-Extruded Shocks are the lightest weight shock option from Polaris® for those riders counting the ounces. The one-piece, simple design is lightweight yet durable. 850 models include exclusive SLS Lightweight Springs.
  • QUICKDRIVE® LOW INERTIA DRIVE SYSTEM: The QuickDrive® System is designed to make the sled rev quicker for instantaneous lift and reduces rotational inertia by 21% for easier handling and flickability. Not simply a belt-drive, it's a complete lightweight drive system.

Rider Balanced Control

  • AXYS® BODY PANEL DESIGN: The AXYS® PRO-RMK® features a compact body panel geometry and design that help give the sled the best lean angle in the industry allowing it to hold even the steepest sidehill lines. The PRO-RMK® does not "panel out" like other sled brands.
  • PRO-RMK® REACT SUSPENSION™: The PRO-RMK® React Suspension™ provides riders with the most precise and effortless ride in the deep snow. Effortlessly initiate sidehills and 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

  • POWDERTRAC® RUNNING BOARDS - 600 AND 800 MODELS: 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.
  • POWDERTRAC® XT RUNNING BOARDS - 850 MODELS: The lightweight PowderTrac® XT Running Boards were developed for extreme riders with new geometry for improved sidehilling and deep snow capabilities. The improved ergonomics maintain usable space for the rider and traction at the rear of the boards.
  • LIGHTWEIGHT: Polaris® snowmobiles are the lightest sleds on the mountain. They have always been light and rigid with added strength and durability while reducing weight on the RMK® AXYS® platform. Providing riders with instantaneous lift, Polaris sleds help riders get up on top of the snow faster.

Instantaneous Lift

  • 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 improved sidehilling, faster and easier climbing, and instantaneous lift allowing the sled to pop onto the snow faster. The aluminum over structure is lightweight and durable for all types of riding. Taller spindles increase clearance to reduce drag.
  • LIBERTY® ENGINE CHOICES FOR EVERY RIDER: 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.
  • 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.
  • WALKER EVANS® SHOCKS: The PRO-RMK® 155 comes with premium Walker Evans® Piggyback Shocks or Monotube Shocks. The Walker Evans® Piggyback Shocks with compression adjusters and remote reservoirs offer the best performance across the broadest range of conditions. The Walker Evans® Monotube Impact-Extruded Shocks are the lightest weight shock option from Polaris® for those riders counting the ounces. The one-piece, simple design is lightweight yet durable. 850 models include exclusive SLS Lightweight Springs.
  • QUICKDRIVE® LOW INERTIA DRIVE SYSTEM: The QuickDrive® System is designed to make the sled rev quicker for instantaneous lift and reduces rotational inertia by 21% for easier handling and flickability. Not simply a belt-drive, it's a complete lightweight drive system.

Rider Balanced Control

  • AXYS® BODY PANEL DESIGN: The AXYS® PRO-RMK® features a compact body panel geometry and design that help give the sled the best lean angle in the industry allowing it to hold even the steepest sidehill lines. The PRO-RMK® does not "panel out" like other sled brands.
  • PRO-RMK® REACT SUSPENSION™: The PRO-RMK® React Suspension™ provides riders with the most precise and effortless ride in the deep snow. Effortlessly initiate sidehills and 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.