Namek Instant Transmission is an old mechanic that was once apart of the mod.
It used to be the way to get to namek, Apparently you used the Dragon blocks to craft it, and it was an item you could use to teleport to Namek. Most of this is speculation since A lot of information about is was lost. The assumed reason being it was replace with the Space pod fast enough that it never really caught on and not many people talked about it.
It is mentioned by the mod creator on this page but it is slashed out and their is no recipe card http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/wip-mods/1442100-dragon-ball-z-mod-dragon-block-c-v1-2-11-wip?page=13