V-STREAM® REPLACEMENT SCREENS
National Cycle’s VStream® is revolutionizing motorcycle windscreen performance! While other manufacturers offer taller screens or air spoiler tops, National
Cycle designed, for the first time ever, a windscreen with airflow calculated and adjusted to quiet and comfort the rider’s environment.
The typical airflow pattern of the wake from most windscreens is called a van Karman vortex. At speeds of 50-90 mph, the air swirls off the windscreen in an
approximate 90-degree segment of rotation, hits the bottom of the rider’s neck on the way up, and curves off the shoulder at approximately 45 degrees. We gave
the VStream® its name for the shape it takes at the upper edge. The patented “V” shape is so quiet because it pushes this vortex out and away from the side of
the rider’s head. The rider’s helmet then resides in still air, and the passenger’s environment is greatly improved as well. Of course, with small sporty screens of
different sizes, the effect on the rider will vary, but there is always a notable difference in quietness and comfort!
VStream windscreens deliver unprecedented durability and optical clarity through the use of 4.5-6.0mm thick Lexan® polycarbonate with FMR hardcoating or our
exclusive Quantum™ hardcoating.
cc Model Year Description
1290 1290 SUPER ADVENTURE/T 15-18 Low (B) 70-N20807
1290 1290 SUPER ADVENTURE/T 15-18 Mid height (A) 70-N20808
1290 1290 SUPER ADVENTURE/T 15-18 Tall (E) 70-N20809
1000 DL1000 V-Strom 14-18 Low (B) 70-N20217A
1000 DL1000 V-Strom 14-18 Mid height (E) 70-N20218A
1000 DL1000 V-Strom 14-18 Tall (E) 70-N20219A
(B) Dark Tint
(A) Light Tint
70-N20217A 70-N20218A 70-N20219A
70-N20807 70-N20808 70-N20809