Sky Stalker Mark X thrusters are the Autobot Jets main engines for the Autobot flyers. These engines are so fast that they reach Mach 3 and are rated A for excellent that they become the Autobot jets main method of flying and due to its cost effective and versatile many believed that the Sky Stalker Mark X is the reason the Autobot jets were able to dominate the skies and space over their arch enemies the Seekers.