2012 KTM 450 SX-F Factory Edition, It is with great excitement that KTM announces the release of the brand new 2012 KTM 450 SX-F Factory Edition. This is an entirely new model which showcases a brand new 450 SX engine and chassis that that make this the bike of choice for Red Bull/KTM rider Ryan Dungey. Power for the Factory Edition comes from the new generation 449.3cc fuel-injected, single-cam, lightweight, four-stroke engine. In addition, the motorcycle features an entirely new chassis, including a new frame design new triple clamps and a new swingarm all combined for a new level of performance and handling. If that wasn t enough, the bike also comes equipped with new generation plastics, orange powder coated frame, racing seat cover, orange anodized rear sprocket, black Excel rims, orange radiator protectors, Dunlop MX51 tires, black anodized Renthal Fat Bar, and Factory Red Bull KTM SX Team graphics. The 2012 450 SX-F Factory Edition will be available in limited quantities, beginning February 2012.