2012 KTM SX 250F, There is no better proof of the 250 SX-F's supremacy than three consecutive MX2 world championship titles. But that s no reason for KTM to rest on its laurels. The new model is now available with a revamped chassis and an electric starter that proves its worth in many situations. Hence the smallest four-stroke in the KTM MX range continues to guarantee top places.