A surface-mounted linear lighting system includes a metal extrusion having an elongated element having a substantially U-shaped cross-section comprising a first vertical sidewall, a second vertical sidewall and a horizontal floor joining the first and second sidewalls, a first groove on an exterior of the first vertical sidewall, a second groove on an exterior of the horizontal floor, a third groove on the exterior of the horizontal floor, and a fourth groove on an exterior of the second vertical sidewall; and a plurality of articulating fasteners configured for coupling to a pair of grooves in the metal extrusion selected from the group: the first groove, the second groove, the third groove and the fourth groove, fastening to a surface, and providing a hinged connection between the metal extrusion and the surface.