Dicyclic warp engines were a type of warp drive technology used by 24th century Hirogen starships in the Delta Quadrant. (VOY episode: "Hunters", ST - New Worlds, New Civilizations short story: "The Hunted") Hirogen dicyclic warp engines were decades ahead of the faster-than-light technology that the Malon possessed. (DS9 - Gateways novel: Demons of Air and Darkness)