Supercross Championship Winner for 2015.If max power is required, there is no other way but the 450 SX-F. This model has proven itself in the main championships around the world over the years. Thanks to its compact SOHC (sohc) engine that delivers explosive but controllable power, it is the weapon of choice for the US KTM Factory Team and Ryan Dungey winning the AMA Supercross championship 2015.Price does not include Hst.