18 May 2011 Revised KX250F features dual injectors from 2012 on

The new KX250F is the world's first production motocrosser to feature an advanced dual injector FI setup, for better engine control and more performance. On top of that, a range of other changes will keep the KX250F ahead of the pack.
A proven race-winner and a potent track weapon in the hands of any serious rider, the 2012 KX250F elevates its game with the world’s first motocrosser dual injection.

The new system brings the performance of the already highly acclaimed engine to the next level, offering power gains that put the KX250F in a class of its own.

Besides this, a host of other changes will make the KX250F an even better bike than before.