Maxspect XF130/XF230 Gyre Generator Ruggedized Propeller with Cage Replacement Maxspect XF130 & XF230 Gyre Generator Ruggedized Propeller with Cage This impeller replaces the Propellers that comes stock with the Maxspect XF130 & XF230 Gyre Generator There are fewer blades and they are made of thicker plastic. They're less likely to break if a rock or other object enters the Gyre Generator. The Bushings are included with the Propeller.