If gold is what youâre after, a KTM 450 SX-F is what you get. Thanks to its compact engine delivering explosive but controllable power, itâs the weapon of choice for the Red Bull KTM Factory Racing Team and the champion, Ryan Dungey. This READY TO RACE bike rules the AMA Supercross Championship. Its secret? Precise handling and arm-stretching grunt. Winners – line up here.