The 100-horsepower, 999cc ProStar inline twin is wedged into the same frame as the 75-horsepower S 900. This gives a horsepower-to-weight ratio of 8.1 horsepower per 100 pounds of vehicle weight compared to the 6.2 horsepower per 100 pounds on the S 900. Pistons are the same size as on the S 900, but stroke is increased by 9.1mm and compression is 11:1 instead of 10.6:1. Also, the S 1000 has two 48mm EFI throttle bodies instead of the S 900’s 46mm body. All this adds up to 7 pounds more dry weight, but, otherwise, the S 1000 EPS shares everything else with the S 900 EPS, including the frame, suspension, bodywork, cabin, overall dimensions, and 27-inch GBC Dirt Commander tires on blacked-out aluminum mag wheels. The S 1000 is only available with Polaris’ variable-assist EPS, and the 60-inch-wide UTV has a 51.3-inch track width, 12.5-inches of ground clearance, and a 79-inch wheelbase. Its Fox 2.0 Podium X shocks have adjustable compression damping and ring preload adjusters; front travel is 12.25 inches, while rear travel is 13.2 inches. Like the RZR XP Turbo and XP 1000, the S 1000 gets new seating angles and an adjustable driver’s seat for optimized ergonomics and “getting up on the wheel.”