Not sure if this is the correct place to ask but it is about the English language.
I am looking for a collective word that describes the movement hardware for a robot. I am making a game where the player can equip it's own type of movement hardware and I want to name the slot. So whether the player equips legs, wheels, tracks or thrusters the name of the slot they are put in must be fitting. I'd prefer a cool sci-fi or cyberpunk name.