2.5 tons. The frame and body of the double-cylinder dragon carriage are made of heavy metal materials, which can ensure the stability and durability of the structure. A two-cylinder engine has more power than a single-cylinder engine. In order to adapt to greater horsepower and torque output, the double-cylinder dragon carriage has 2.5 tons. Dragon car is a special vehicle, also known as HEMTT or heavy-duty extended mobile tactical truck, which is used to transport heavy equipment and materials.