2012 KAWASAKI KX 250F, 2012 KAWASAKI KX250F, Kawasaki Innovation Continues with Dual Injectors No other bike in its class has spent more time on the AMA Supercross podium than the Kawasaki KX⿢250F. The race-proven technology of the quarter-liter motocross leader returns for 2012, but with added enhancements that give the KX250F even more usable power, increased durability, and the best-handling chassis yet.