2027 Polaris ProStar S4 TITAN® Adventure Ultimate 155 1.8

Meet the 2027 Polaris ProStar S4 TITAN® Adventure Ultimate 155 1.8 in —a snowmobile that looks ready for a postcard and rides like it’s late for the next overlook. Built as a widetrack touring machine, it’s the kind of sled that turns winter “maybe” plans into “let’s go” miles, with space for two and the confidence to keep rolling when the trail gets rutted, drifted, or freshly dumped-on.



At its heart is Polaris’ liquid-cooled ProStar™ 998cc parallel-twin, a DOHC 4-stroke that’s smooth, eager, and happy on regular gas. Tap the electric start, squeeze the thumb throttle, and let the CVT do what it does best—keep power on tap without fuss. When you need to back into a tight spot at the cabin or line up to hook up a sled, reverse makes the maneuvering feel effortless rather than “everyone please watch me struggle.”



This TITAN rides on the AXYS® aluminum frame, sized for real adventure days at 133 inches long and 46.5 inches wide, with a planted stance you can tune between 39 and 41 inches. Up front, High Clearence IFS with Independent A-Arm suspension delivers 9 inches of travel, paired with adjustable hydraulic Polaris IFP shocks. Out back, the BackTrak20 rear suspension adds 16.5 inches of travel, working with Polaris IFP rear shocks and a Fox® QS3 center shock with a remote reservoir—so whether you’re cruising groomers, floating over chatter, or carrying a passenger, the ride can match the mission.



Traction comes from a Cobra Track measuring 155 x 20 with 1.8-inch lugs, giving this widetrack its confident, go-anywhere footprint. TrailBreaker skis with carbide skags help it track cleanly, while Titan Hydraulic braking with a hydraulic disc brings everything back under control with a sure, predictable feel.



Inside the cockpit, it’s built for long days: a two-piece seat for two, passenger backrest, high folding LED lighting, and heated grips for both driver and passenger. Add RIDE COMMAND™ GPS, Bluetooth® audio, and mobile app instrumentation, and the ride feels as modern as it is adventurous—especially in that unmistakable finish that looks right at home against bright snow and dark pines.