Meet the 2027 Polaris 850 RMK® SP 155 in —a mountain sled that looks as ready for the climb as it feels the moment you grab the bars. It’s the kind of machine that makes you scan the next ridge line and think, “Yeah… we’re going up there.”

At the heart of it is the Patriot™ 840cc liquid-cooled, 2-cylinder, 2-stroke twin with fuel injection and oil injection, built to respond fast and clean when the snow gets deep and the line gets technical. A thumb throttle keeps control intuitive, while the CVT setup with belt drive and P-85 / TEAM LWT clutching helps keep power delivery smooth when you’re working the terrain. When it’s time to pivot in tight trees or reset on a sidehill, reverse is ready to save effort (and conserve your energy for the next pull).

The RMK® SP 155 is all about balance—light, strong, and purpose-built. Its MATRYX aluminum frame keeps the feel precise, and the RMK® React™ independent A-arm front suspension with 9 inches of travel helps it stay composed when the trail disappears and the mountain starts improvising. Out back, 16 inches of rear travel and Polaris IFP adjustable gas shocks (front, rear, and center) give you tuning range for changing snow and changing ambition.

And that track? A Series 8 at 155 x 15 with 2.75-inch lugs—the kind of bite that encourages you to pick a line that looks ridiculous… right up until it works.

Details matter out there, too: Gripper® skis with carbide skags for confident bite, a hydraulic disc rear brake with RMK® branding for controlled check-ups, LED lighting with a tinted low-height setup, plus heated, adjustable driver grips for long, cold days that refuse to end early. Add practical touches like fuel level gauge and a temperature warning light, and you’ve got a sled that’s eager to roam—with an 11-gallon fuel capacity to keep the ride going.

In , this RMK® doesn’t just show up—it shows off.

Color Options* White Lightning / Gloss Black / Orange Burst: +$0

Pricing* Warranty (Months): 12

Engine* Engine Type: Horizontal In-line
* Cylinders: 2
* Cooling: Liquid
* Bore: 85 mm; 3.35 in
* Stroke: 74 mm; 2.91 in
* Displacement: 840 cc; 51.2 ci
* Starter: Pull
* Fuel Type: Gas / Oil Injected
* Carburetion Type: Fuel Injected

Transmission* Transmission Type: Continuously Variable (CVT)
* Reverse: Yes
* Clutch Brand: P-85 / TEAM LWT

Drive Line* Track Brand: Series 8
* Track Length: 155 in; 3937 mm
* Track Width: 15 in; 381 mm
* Lug Height: 2.75 in; 66 mm

Technical Specifications* Length: 132 in; 3352.8 mm
* Width: 43.4 in; 1102.4 mm
* Height: 53 in; 1346 mm
* Minimum Ski Stance: 36 in; 914 mm
* Maximum Ski Stance: 38 in; 965 mm
* Dry Weight: 432 lbs; 196 kg
* Fuel Capacity: 11 gal; 41.6 l

Exterior* Frame: Aluminum
* Ski Material: Plastic

Suspension* Front Suspension Type: Independent A-Arm
* Front Travel: 9 in; 229 mm
* Rear Travel: 16 in; 406 mm

Brakes* Rear Brake Type: Hydraulic Disc

Seats* Number Of Seats: 1

Instrumentation* Speedometer: Standard
* Tachometer: Standard
* Trip Odometer: Standard

Storage* Glove Box / Dash Storage: Standard

Lights* Type: LED

Glass* Windshield: Standard

Convenience* Heated Hand Grips: Standard
Meet the 2027 Polaris 850 RMK® SP 155 in —a mountain sled that looks as ready for the climb as it feels the moment you grab the bars. It’s the kind of machine that makes you scan the next ridge line and think, “Yeah… we’re going up there.”