The Terex RH 90-C front shovel has two Caterpillar C18 turbocharged, charge air cooled, six-cylinder engines producing 1,150 net horsepower (HP). It comes standard with a TriPower shovel attachment, independent oil cooling system, three-circuit-hydraulic system, electronic-hydraulic servo control, torque control in the closed-loop swing circuit, automatic central lubrication system, Xenon working lights, Board Control System (BCS), spacious cab, and a hydraulically-driven radiator fan with electronically controlled speed.

The RH 90-C has a track gauge of 177 inches (450 cm) with 31.5-in (80-cm) shoes. Its maximum bucket capacity is 13.1 cubic yards (10 m³).