An Earth Caste Pilot Array is a Farsight Enclave-exclusive modification of the Tau XV104 Riptide Battlesuits intended to accommodate an Earth Caste member as its pilot. Whilst the Earth caste's squat and muscular physiology makes them ill-fitting pilots for the Tau Battlesuits they are famed for creating, in the Farsight Enclaves it is not unheard of for an Earth Caste Pilot Array to be fitted to a Riptide Battlesuit in order to grant rare individuals the honour of donning the "Hero’s Mantle." Earth Caste pilots are naturally able to judge a Battlesuit's accuracy and energy tolerances far better than a Fire Caste equivalent, and are able to activate an XV104's Dark Matter Nova Reactor with a greatly decreased chance of dangerous radiation feedback. However, an Earth Caste pilot's skill in close quarters combat nevertheless leaves much to be desired.
- Farsight Enclaves - A Codex: Tau Empire Supplement (6th Edition) (Digital Edition), pp. 245, 308-309