A composite discharge spout portion for a discharge spout for a forage harvester defines at least a portion of a path for crop materials. The spout portion may include a proximal end, a distal end, an upper wall and a pair of side walls extending between the proximal end and distal end. The side walls depend from the upper wall, and the top and side walls have opposite major faces and edges. A spine may be integrated into each of the side walls and extends between the proximal and distal ends, with each of the spines forming a tubular structure on either side of the spout portion. The upper wall, the side walls and the spines may be integrally formed of a composite material.