Meet the 2027 Polaris ProStar S4 INDY® Adventure 137 in ****—a trail sled that looks ready for trouble (the fun kind) before you even thumb the throttle. It’s the sort of machine that makes a regular winter evening feel like an invitation: “Go ahead, take the long way home… and then take a longer one.”
At the heart of this INDY Adventure is a liquid-cooled, 998cc ProStar™ parallel twin—two cylinders, DOHC, four-stroke smoothness, and fuel injection that keeps things crisp when the air gets sharp. Hit the electric start, settle your thumb on the throttle, and let the continuously variable (CVT) transmission do what it does best: keep the power feeling immediate and effortless, whether you’re rolling out from a stop or stretching the trail into a fast, flowing ribbon. Regular fuel keeps it simple, and when it’s time to back out of a tight spot or shuffle at the lodge, you’ve got reverse on tap.
This sled is built for real trail miles, not just parking-lot posing. The aluminum MATRYX chassis brings a purposeful feel, and the independent A-arm front suspension pairs with adjustable gas shocks featuring remote reservoirs to keep the front end calm and composed. Out back, the PRO-CC rear suspension—also supported by adjustable gas shocks with remote reservoirs—delivers deep travel that helps it stay planted when the trail gets choppy, whooped-out, or simply unpredictable. The Cobra Track measures 137 inches long and 15 inches wide, with 1.35-inch lugs—enough bite to drive forward confidently while still feeling like a trail sled that enjoys carving. Pro-Steer™ composite skis and carbide skags help it hold a line when the pace picks up.
Bring a passenger and the vibe changes—in a good way. The two-piece seat makes room for company, with a passenger backrest that says, “Yes, we’re actually going somewhere.” It’s comfortable enough to turn a quick ride into an all-afternoon adventure, and the dry weight feels substantial in the best sense: steady, composed, and ready to track straight when the trail opens up.
The details are set up for winter reality. There are hand guards for the cold blast, rubber grips for secure control, and heated grips for the driver when the temperature drops and the miles keep stacking. A high tinted windshield knocks the edge off the wind, and when you’re cruising after dark, LED lighting keeps the view clear and the sled visible.
And then there’s the modern side of the adventure. RIDE COMMAND™ GPS helps you keep your bearings when the trail network starts looking like spaghetti, and the system supports Bluetooth® audio plus mobile app instrumentation—because sometimes the perfect ride needs a perfect playlist. You’ll also appreciate the clear warning and gauge setup, including a fuel level gauge and temperature warning light, so you can focus on the ride instead of second-guessing the sled.
From the single exhaust note to the hydraulic disc rear brake feel, everything about this INDY Adventure 137 in **** is tuned for riders who want their winter travel to feel like an event—not an errand. Load up, fold what needs folding, stash what needs stashing, and point it at the next turn in the trail. The only real question is how late you plan to be getting back.
