Which characteristic affects the weight of the grader significantly when compared to its unarmored version?

The significant characteristic that affects the weight of the grader when compared to its unarmored version is the addition of armor. Armor is typically made from heavy materials designed to provide additional protection for the grader and its operator, especially in challenging work environments or conflict zones. The presence of armor directly increases the overall mass of the machine, as the added materials are inherently heavy, making the grader more robust but also significantly heavier than its unarmored counterpart.

Other factors such as length or height may alter the dimensions and distribution of weight, but they do not contribute to the overall weight to the same extent as the addition of armor does. Similarly, while increases in engine power can lead to modifications that potentially increase weight, the primary reason for significant weight changes is the inclusion of protective armor. Thus, when assessing modifications or upgrades to a road grader, the impact of armor is the most substantial in terms of weight variation compared to an unarmored version.