A cage vane for use with a combine threshing system that includes (i) a mounting leg extending a mounting leg length from a cage vane inner edge to a mounting leg outer surface and a mounting leg thickness from a mounting leg bottom surface to a mounting leg top surface and (ii) a protruding leg extending a protruding leg length from the cage vane inner edge to a protruding leg top surface and a protruding leg thickness from a protruding leg inner surface to a protruding leg outer surface. At least one of the mounting leg length changes as the mounting leg extends the cage vane length, the mounting leg thickness changes as the mounting leg extends the cage vane length, the protruding leg length changes as the protruding leg extends the cage vane length, and the protruding leg thickness changes as the protruding leg extends the cage vane length.
