One of the major highlights to KTM's SX-F/ XC-F lineup is the inclusion of an all-new 250cc four-stroke engine that will grace both models. Compared to last year these powerplants will feature larger intake and outlet ports, new camshafts and timing, redesigned cylinders and all-new, die-cast cases, leading to a claimed five horsepower increase in power. The 250cc thumpers will be electric-start only with no kick option. These machines will also see a significant reduction in weight thanks to the new triple clamp, frame, linkage and engine designs. The nearly two-gallon SX-style fuel tanks now have a new inner screw-type cap, with four-strokes getting a more efficient in-tank fuel filter. New fuel pump/ hose routing for the four-strokes allow the SX fuel tanks to be compatible with EXC tanks, allowing for more volume and increased mileage. Additionally, a new quick-release micro screen makes servicing the in-line filter a snap.