On the other end of the power spectrum, Polaris is also introducing a new four-stroke powerplant – its first four-stroke foray in a full-sized snowmobile since it dropped the old Webber motor after 2014 – with the new Polaris-built ProStar S4 engine. It allows buyers of Indy VR1 and Switchback Assault machines to feel 180ish hypersled-like horsepower in a two-stroke snowmobile that will be about 80 to 100 pounds lighter than the four-stroke musclesleds offered by its competition. For the flatlands or the mountains, Polaris is making a major power play with its snowmobile lineup for 2023 with new and exciting engine packages.įor trail and crossover riders, Polaris is spreading the use of its Patriot Boost engine introduced last year exclusively in RMK mountain models.
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