Not available from the factory, but a potent exploration weapon nonetheless 

KTM Zweiradcenter Bernhardt in Germany has performed an impressive conversion the to KTM 450 EXC, a factory dual-sport motorcycle with a considerably bias towards short-distance technical dirt travel.  The interesting result of Zweiradcenter’s modifications is a motorcycle better suited to long distance, remote exploration, with expeditions into the Sahara, the Road of Bones and even the Trans-America Trail all coming to mind. The concept of this platform has considerable appeal, combining the athletic performance of the 450 with additional range and greater rider comfort. The brakes are bigger, a rally computer has been fitted, along with 37L of fuel.  The complete modification list is impressive, but additional oil capacity or improvements to the service intervals seems to be absent from the line-up.  I could easily see strapping a Giant Loop bag to the back and ripping up the Skeleton Coast. Zweiradcenter Website