A leaner, stronger and EFI equipped racing thoroughbred Comprehensively re-designed with a new fuel-injected engine, chassis, bodywork and extensive durability enhancements, the 2009 Kawasaki KX?450F motocrosser is sleeker, faster and more high-tech than ever. Although it has undergone the biggest makeover since its original 2006 debut, the new KX450F still shares a clear bloodline with its championship-winning predecessors.