Fortified Phobium Greaves

Fortified Phobium Greaves is a premium leg-slot heavy armor. It can be obtained by Jedi Knights as a mission reward for completion of the level 25 mission Race Against Doom, on the planet Tatooine.

Source
Fortified Phobium Greaves is a mission reward obtained by completing Race Against Doom, a level 25 mission obtained on the planet Tatooine.
 * Mission reward