V-STREAM BMW R1100GS windshield ZTECHNIK Z2438 R850GS windscreenBMW R1100GS R850GS Windshield V Stream Ztechnik Z2438 revolutionizes windscreen performance. The advanced V shape and dimensional contours of the VStream windshields push the wake, typically referred to as the von Karman vortex, out and away more than 4 inches from the side of the rider's helmet. The rider then resides in a quiet and calm air pocket. This improvement is notable for the passenger as well. The Z2438 brings V Stream wind management and