Abstract: Topping mechanism capable of selective delivery of cane tops to either side, for use in a two-way sugar cane harvester. The mechanism has a pair of contra-rotating in-running cutters which are always rotated in the same direction and which assist the discharge of cut tops for both directions of top delivery. The cutters have mounted on them hub members carrying projecting feed members which serve both to gather the cane tops and to discharge them. A top deflector is pivotally mounted between the cutters and according to its position deflects the tops selectively towards either of the cutters according to the desired direction of delivery.