Figure Alteration System

Figure Alteration Systems are morphcore-like systems from the Marvel portion of the Generation 1 continuity family.

A Transformer's Figure Alteration System is responsible for controlling the transformation between their robot and alternate mode. Presumably such systems utilize transformation cogs.

Fiction

Marvel The Transformers comics

Figure Alteration System appeared exclusively in the UK portion of the Marvel Comics continuity.

According to Blaster, one of the side effects of Nucleon exposure is that the Transformer's Figure Alteration Systems are converted into Energy Storage Reactors, causing the loss of transformation ability. Issue #300 letters section