2021 Polaris® 850 RMK PRO 155 2.6"

The 2021 Polaris 850 PRO-RMK 155 with a 2.6-inch track is a high-performance mountain snowmobile designed for precision and control in deep snow and technical terrain. Built on the AXYS platform, it features the reliable Patriot 850 engine, a lightweight chassis, and a versatile setup optimized for backcountry riding. Below is a detailed description based on available information, including relevant web sources.

Key Specifications and Features:
Engine:
Type: Patriot 850, 2-stroke, liquid-cooled, naturally aspirated.
Displacement: 840 cc.
Bore x Stroke: 85 mm x 74 mm.
Horsepower: Approximately 165 hp (exact figures not specified by Polaris, comparable to high-performance 850-class engines).
Fuel System: Cleanfire® Injection for precise fuel delivery and instant throttle response.
Ignition: Patriot™ 3DS.
Exhaust: Single, 3 Stage VES (Variable Exhaust System) for optimized power and efficiency.
Fuel Capacity: 11.5 gallons (43.5 L).
Chassis and Platform:
Platform: AXYS, known for its lightweight, rigid, and balanced design, offering superior handling in deep snow.
Estimated Dry Weight: Approximately 420 lbs (190.5 kg), contributing to a class-leading power-to-weight ratio.
Dimensions:
Overall Length: 131 inches (332.7 cm).
Overall Width: 46.5 inches (118.1 cm).
Overall Height: 49.1 inches (124.7 cm).
Ski Center Distance: Adjustable 36–37–38 inches (91.4–93.9–96.5 cm) for customizable handling.
Construction: Aluminum overstructure with raised chassis for reduced snow drag and improved deep snow performance.
Suspension:
Front Suspension: RMK® React™ Suspension with lightweight forged A-arms and spindles, featuring WER® Light or WER® Velocity shocks. Front travel: 9 inches (22.9 cm).
Rear Suspension: PRO-RMK® Rear Suspension with optimized geometry for direct power transfer and precision in technical terrain, equipped with WER® Light or WER® Velocity shocks. Rear travel: 16 inches (40.6 cm).
Features: Designed to hold lines in steep and technical terrain, with adjustable shocks for tailored handling and reduced rider fatigue.
Track:
Type: Series 6, 2.6-inch lug height, optimized for deep snow flotation and traction.
Dimensions: 15 x 155 x 2.6 inches (381 x 3,937 x 66 mm), providing versatility for technical mountain riding.
Features: Lightweight track design enhances lift and agility, ideal for backcountry conditions.
Drivetrain:
Drive System: QuickDrive™ (standard, not QD2 in all configurations), a low-inertia belt drive system for quick response and enhanced handling. QuickDrive2™ (QD2) available on select models for further weight reduction.
Drive/Driven Clutch: P-85 / TEAM® Lightweight (LWT).
Brake Type: RMK® LWT disc brakes for reliable stopping power.
Instrumentation and Technology:
Gauge Type: MessageCenter Display standard, with optional 7S Display featuring Ride Command (GPS, group ride functionality, and topographic mapping) on select SnowCheck models.
Lighting: LED headlight for improved visibility.
Convenience Package: Manual start (electric start optional), high-elevation clutching, hand and thumb warmers, and wind deflector.
Additional Features:
Low-rise handlebar for precise control.
Storage bag standard.
Electronic fuel gauge, speedometer, odometer, tachometer, and temp/low oil indicator.
Design and Aesthetics:
Color Options: Black Pearl/Indy Red, White Lightning/Plum Crazy Purple, Black Pearl, Ghost Gray/Polaris Blue, Indy Red.
Purpose: Engineered for riders seeking precision and control in the deepest and steepest terrain, delivering a nimble and responsive ride.
Tunnel: Polished aluminum tunnel for reduced snow buildup and enhanced aesthetics.
Performance and Handling:
The Patriot 850 engine provides robust, smooth power with excellent throttle response, ideal for deep snow and technical mountain riding.
The AXYS platform’s raised chassis and lightweight design enhance agility, while the PRO-RMK suspension ensures precise handling for holding lines in steep terrain.