Below is the list of modifications that allows a mobile suit to alter what armor class it is by either adding or removing armor. Doing so increases or decreases its Evasion Rating (A reflection of bulk and weight) and also increases or decreases Durability points available. What modifications are allowed depends on the base armor class of the machine.
Bold is the machine's base armor class.
Light -----> Medium
Light <------- Medium ------> Heavy
Heavy -----> Medium
Modifying the armor class of a transformable mobile suit to a heavier armor will restrict that mobile suit to its MS form.
Changing an armor class also changes the base evasion rating of the mobile suit, as detailed below.
Changing an armor class does not change the machine's weight capacity.