EFI, a new chassis and ominous looks mean sleepless nights for the competition Sporting a new chassis, fuel-injected engine, bodywork and durability refinements, the 2009 Kawasaki KX™450F motocrosser represents high-tech racetrack domination. However, the all black KX450F Monster Energy® promises a cranked-up heart rate for anyone with a pulse, thanks to its black bodywork and wheels, green hubs and silver frame; highlighted by the aggressive Monster Energy graphics package.