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Engine Choices for Every Rider

The Polaris family of 2-stroke and 4-stroke engines deliver a wide range of options across each sled family so that you can feel confident control wherever and whenever you ride.

Engine Choices for Every Rider

The Polaris family of 2-stroke and 4-stroke engines deliver a wide range of options across each sled family so that you can feel confident control wherever and whenever you ride.

ENGINE HIGHLIGHTS

DURABILITY

Proven Engine Architecture

The Patriot engines are built off the proven 850 Patriot with years of experience and refinement on the snow. Plus, the ProStar S4 is proven in millions of Polaris off-road vehicles and is optimized for snow.

SEAMLESS INTEGRATION

Legendary Performance

The Polaris engine lineup builds on the legendary 25-year heritage of Polaris Liberty engines and is engineered to seamlessly integrate into your Polaris snowmobile for minimized vibrations and increased performance.

VERSATILE POWER

Engines for Every Riding Style

The Polaris engine lineup delivers thrill and exciting power whether you're cruising the trails, exploring the backcountry, or riding the ditches.

AN ENGINE FOR EVERY RIDER

Polaris Snowmobiles offer versatile engines for every riding style. From the thrill and performance of Patriot Boost 2-stroke turbocharged engine to the spirited and fuel efficient ProStar S4 4-stroke engine.

SnowCheck Exclusive
Patriot Boost

The Patriot Boost is the turbocharged heart of the Factory Mod family and is most powerful engine from Polaris to deliver the ultimate performance in the snow.

Highest Power

2-Stroke

Mountain, Trail, and Crossover

SnowCheck Exclusive
Patriot 9R

The 9R big bore Patriot engine is the newest member of the Factory Mod family. Delivering race-mod response and lightweight power, the Patriot 9R is the most powerful naturally aspirated engine Polaris has ever built.

High-Power

2-Stroke

Mountain, Trail, Crossover

850 Patriot

At the heart of the Patriot family lies the 850 Patriot. Built from 25+ years of learnings with Polaris Liberty engines, 850 Patriot takes premium performance to the next level with punchy acceleration, quick response, and legendary durability.

High-Power

2-Stroke

Mountain, Trail, Crossover

650 Patriot

The 650 Patriot, built on the proven 850 architecture, delivers smooth power and response, unparalleled durability, and super-efficient operation.

Mid-Range Power

2-Stroke

Mountain, Trail, Crossover, Sport Utility, Widetrack

ProStar S4

Based on the proven Polaris ProStar architecture, the 4-stroke ProStar S4 delivers fun and spirited performance, easy ownership, and proven dependability.

Under 100 HP

4-Stroke

Trail, Widetrack

550 Liberty

A proven and durable fan-cooled snowmobile engine that provides reliable performance for a great value.

Under 100 HP

Fan-Cooled

Trail, Crossover, Sport Utility