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Polaris 850 Switchback Assault 146: A Versatile Crossover Snowmobile

The 2025 Polaris 850 Switchback Assault 146 is a crossover snowmobile designed to deliver exceptional performance both on and off the trail. Built on the Matryx platform, it combines trail precision with off-trail agility, making it a favorite among riders seeking versatility. The snowmobile features a narrow cockpit for improved rider connection and maneuverability in deep snow conditions. Its design emphasizes a rider-first approach, ensuring control and comfort across varying terrains.

Engine and Performance

At the heart of the 850 Switchback Assault 146 lies the 850 Patriot engine, a liquid-cooled, two-cylinder powerhouse with a displacement of 840 cc. This engine is known for its durability and responsive power delivery, catering to riders who demand consistent performance. The engine's bore and stroke measure 85 mm x 74 mm, contributing to its robust output. The fuel system utilizes Cleanfire® Injection, ensuring efficient fuel delivery and combustion. Additionally, the snowmobile employs a MATRYX Stealth disc brake system and a chaincase drive system for reliable power transmission and braking performance.

The power curve of the 850 Patriot provides smooth acceleration across a wide range of RPMs, delivering confidence-inspiring throttle response whether navigating tight trails or open backcountry. Its advanced cooling system helps manage engine temperature effectively, even under demanding loads, reducing wear and improving longevity. Riders also benefit from reduced vibration, thanks to the balanced engine design, which contributes to a more comfortable and fatigue-free ride over long distances.

Suspension and Handling

The snowmobile's suspension system is engineered for both comfort and control. The front suspension features the MATRYX Front Suspension with WER 2" Velocity shocks, providing 9.5 inches (24.1 cm) of travel. The rear suspension utilizes the IGX 146 setup, equipped with WER Velocity shocks, offering 16 inches (40.6 cm) of travel. This configuration ensures that the snowmobile can absorb bumps and maintain stability across diverse terrains. The PRO-STEER skis contribute to precise steering, enhancing the rider's confidence during aggressive maneuvers.

Handling is further enhanced by the Matryx platform's optimized rider position, which places the rider closer to the center of gravity. This improves cornering and makes it easier to transition from side to side in deep snow. The chassis is designed to be both rigid and lightweight, improving durability without sacrificing responsiveness. Whether carving through powder or navigating hard-packed trails, the Assault 146 remains predictable and confidence-inspiring.

Track Options

Riders can choose from various track options to suit their specific riding conditions. Available tracks include:

  • 15 x 146 x 1.352" Cobra
  • 15 x 146 x 1.5" Ice Storm
  • 15 x 146 x 1.6" Cobra
  • 15 x 146 x 2.0" Crossover

These options allow customization for optimal traction and performance, whether on groomed trails or deep snow environments. The 2.0" Crossover track, for example, provides excellent flotation and grip for off-trail exploration, while the Ice Storm track excels in icy, packed trail conditions.

Dimensions and Ergonomics

The 850 Switchback Assault 146 is designed with rider ergonomics in mind. It has an estimated dry weight of 499 lb (226 kg), contributing to its agility and ease of handling. The snowmobile's dimensions are as follows:

  • Overall Length: 125 in (317.5 cm)
  • Overall Width: 47 in (119.4 cm)
  • Overall Height: 46 in (116.8 cm)
  • Ski Center Distance: 42.5 in (108 cm)

These measurements ensure a balanced and comfortable ride, accommodating a single rider with ease. The Matryx bodywork improves wind protection while maintaining access to key components for service and maintenance. The seat design is slim yet supportive, allowing for quick body movements essential in technical terrain.

Features and Technology

The 2025 model is equipped with a range of features aimed at enhancing the riding experience. Standard features include a 12V Outlet / RCA, electronic fuel gauge, and Smart Warmers for hand and thumb warmth. The handlebar is a one-piece hooked design, providing a secure grip during aggressive riding. The snowmobile also features the 7S Display, which serves as a speedometer, tachometer, and provides temperature and low oil indicators. This display integrates with Polaris' RIDE COMMAND technology, allowing riders to plan, track, and share their rides, as well as monitor group rides without the need for cell coverage.

Optional accessories enhance the snowmobile's versatility, including electric start, heated passenger grips, mirrors, passenger seat, rear rack/tow hitch, and a security system. The windshield options range from handguards to Matryx Mid Smoke and Matryx Tall Smoke, catering to different rider preferences and weather conditions. Polaris also offers a wide selection of lock & ride accessories such as storage bags and mounts for tools or gear, making this machine adaptable for long expeditions or short trail blasts.

Purpose-Built for All-Round Riding

The Polaris 850 Switchback Assault 146 was developed to bridge the gap between trail and deep snow performance, appealing to riders who want to explore beyond the boundaries of groomed paths. With its balanced geometry, powerful engine, and intelligent design features, it provides the freedom to conquer various riding styles. This snowmobile is often chosen by backcountry explorers, adventure riders, and even trail cruisers looking for something with a bit more edge.

For riders who frequently encounter variable snow conditions, the Switchback Assault offers the perfect compromise—capable of floating through powder while still tracking confidently on hardpack. It is as much at home carving tree lines as it is climbing rolling hills or covering long distances on established routes. In short, the 850 Switchback Assault 146 continues to set a high standard in the crossover category, offering reliability, performance, and innovation for today's snowmobile enthusiast.

Polaris Switchback Assault 850
Polaris Switchback Assault 850
Model name Switchback Assault 850
Manufacturer Polaris Inc.
Vehicle type Snowmobile (Crossover class)
Engine Patriot 850, 2-stroke, 840cc twin-cylinder
Horsepower Approx. 165 hp
Fuel system Cleanfire® semi-direct injection
Chassis MATRYX platform
Track 146 in. length, 15 in. width, 1.6-2.0 in. lug height (varies by model year and trim)
Front suspension Polaris Race IFS with Walker Evans Velocity Shocks
Rear suspension IGX 146 with Walker Evans Velocity Shocks
Seat height Approx. 30.5 in. (unloaded)
Dry weight Approx. 470-480 lbs (depending on model year and configuration)
Fuel capacity 11.5 US gallons (43.5 liters)
Oil capacity 3.0 quarts (Cleanfire 2-stroke oil)
Electric start Standard or optional depending on trim
Reverse PERC® electronic reverse
Brakes Hydraulic disc with lightweight rotor
Transmission CVTech Drive / Driven Clutch System (P-85 / TEAM LWT)
Primary use Trail and off-trail riding (50/50 crossover), backcountry exploration, utility in deep snow
Why it's used Blends trail performance with off-trail capability; suited for riders who need versatility across terrain types
Typical terrain Groomed trails, ungroomed trails, deep snow, mountainous areas, northern backcountry
Available model years 2008-present (with 850 Patriot engine introduced in 2019)
Popular regions North America, Scandinavia, Alps, Russia, northern Japan, Arctic and subarctic zones
Common countries of use USA (especially northern states), Canada, Sweden, Finland, Norway, Switzerland, Austria, Russia, Japan
Registration class Off-highway recreational vehicle (in most jurisdictions)
Emissions compliance Meets EPA and CARB standards (model-dependent)
Technology features Polaris Ride Command™ (optional), LED lighting, SmartWarmers™, integrated storage
Accessories Handguards, heated seats, storage bags, tow hitches, GPS modules, windshields
Maintenance Moderate to high; requires regular inspection of suspension, clutch system, and track
Reliability Generally reliable with proper maintenance; known for high performance in harsh conditions
Category Crossover snowmobile / Backcountry-trail hybrid
Manufacturer Info
Company Polaris Inc.
Headquarters Medina, Minnesota, USA
Founded 1954
Other vehicles ATVs, UTVs (RZR, Ranger), motorcycles (Indian), electric vehicles