Abstract: A wind drag reducer for trailers or cargo carrying bodies wherein the front upper portion of the trailer or body is exposed above the cab of the motor vehicle connected to pull the same. The drag reducer consists of two substantially flat and vertical side panel means which are each respectively attached at one end to the front or sides of the trailer adjacent the front side edges thereof and converge therefrom to a vertical line midway between the front sides of the trailer where they are connected together over top of the cab of the tractor or motor vehicle to thereby form a V-shaped structure which splits the wind and reduces the resultant drag on the sides of the trailer.