2015 Ktm 250 SX-F, UPDATES FOR 2015! Come check it out at Brewer Cycles! - The 250 SX-F has been an established force in the MX2 World Championship for years now. In addition to the world title, it also won the prestigious AMA Supercoss Lite Championship in 2013. All over the world, in both professional and amateur classes, the 2013 motorsport season was very successful for the 250 SX-F - and the 2014 season promises to be no different. In Model Year 2015, the feisty 4-stroke hits the scene with further improvements to engine and chassis – a performance package that will continue to dominate the MX2 class.