The 69-ton HD605-7 has numerous design enhancements that promote productivity, maneuverability, durability, safety and operator comfort. This is the quarry version of the HD605-5. Features include the all-electronic-controlled K-ATOMiCS seven-speed planetary transmission; advanced electronics; and a hydraulic system designed for power and control. The truck is powered by a 715-hp, six-cylinder Komatsu Tier II compliant engine.