A kingpin lock including a body having a substantially frustoconical portion and a kingpin cavity having a central axis, a slide channel having a central axis and a sleeve channel having a central axis. The slide channel intersects the kingpin cavity such that its central axis is substantially offset from a radius that extends outwardly from the central axis of the kingpin cavity. The sleeve channel intersects the slide channel. A slide member is shiftable between an engaged position extending partially into the kingpin cavity and a disengaged position where the slide member does not engage the kingpin. A locking member is shiftable between an engaged position and a disengaged position such that the locking member engages an indentation in the slide member so that the slide member is secured in the engaged position and the kingpin lock is secured to the kingpin.