Honda CRF1100D Africa Twin Adventure Sports. COMFORT - OPTICS - STRENGTH National Cycle revolutionizes windscreen performance with the VStream® Windscreen! The patented "V" shape and advanced dimensional contours push the wind vortex away from the rider's head, resulting in a more, quiet riding environment. Polycarbonate is used for outstanding optics and impact strength 23X better than acrylic. Then we add our exclusive Quantum® hardcoat for scratch resistance 10X better than FMR coating and 30X better than acrylic replacement screens. This is one tough windscreen! The VStream revolution is here!