2012 KAWASAKI KX 450F, 2012 KAWASAKI KX450F, Prepare for Launchâ¿¿ The race-winning power and confident handling of Kawasakiâ¿¿s KXâ¿¢450F motocrosser are back in an even sleeker and more advanced package than ever before. With racing always at the forefront, the KX450Fâ¿¿s latest technical innovations were developed from the factory know-how of the Monster Energy Kawasaki race team, with the final product representing an unmatched combination of cutting-edge innovation and race-proven components. Its best-in-class performance is facilitated by the highest level of rider adjustability and the most progressive electronics package ever seen on a production motocrosser. From the moment the gate drops, the 2012 KX450F is set to leave challengers in its dust.