2010 Kawasaki KX85, Moto Mania - Tomorrow's champions start here. For the growing, young rider ready to step it up to the next level or slightly older beginners looking to start racing, the Kawasaki KX 85 is a youth racer?s dream. Powered by a liquid-cooled, two-stroke, single-cylinder 84 cubic centimeter engine that generates race-winning power, the KX85 is packed with high-tech features such as an electrofusion-coated cylinder with a narrow squish band and large-volume combustion chamber to boost top-end power.