2007 Polaris Ranger XP, POLARIS RANGER CREW 4X4 - WELCOME TO RANGER COUNTRY. WHERE WE WORK HARDER AND RIDE SMOOTHER. FOR XTREME OFF-ROAD PERFORMANCE. The RANGER XP takes the 4 x 4 off-road utility vehicle to the next level. RANGER XP is powered by a liquid-cooled Polaris 700 twin-cylinder EFI engine pumping out 40 horsepower ? the highest allowed by law. Its specs shatter the status quo and include a 50 mph top speed and 1,750-pounds towing capacity. It?s the first utility vehicle with Electronic Fuel Injection for fast starts even in extreme temperatures and altitudes.