The V-Stream Windshield

ZTechnik revolutionizes windscreen performance

with its new VStream® windshield. While creating

a comfortable ride for the BMW sport touring

rider, ZTechnik introduced QUIET into the equation.

To create COMFORT, other manufacturers

will offer taller windshields and spoiler tops to lift

the air stream. ZTechnik designed, for the first

time ever, a windshield with airflow calculated

and adjusted to quiet the rider’s environment. In

addition, VStream windshields are designed with

an unprecedented area of protection and an outstanding

level of DURABILITY and OPTICAL

CLARITY that is only available through the use of

Quantum™ coated Lexan® polycarbonate.

QUIET

The typical airflow pattern of the wake from most

windshields is called a van Karman vortex. At

speeds of 50-90 mph, the air swirls off the windshield

in an approximate 90-degree segment of

rotation, i.e. it rolls off the windshield, hits the

bottom of the rider’s neck on the way up, and

curves off the shoulder at approximately 45

degrees. ZTechnik gave the VStream its name for

the shape it takes at the upper edge. The “V”

shape is so outstandingly quiet because it pushes

this vortex out and away more than 4 inches

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.