Here is how I made a custom skirt.1. Select an old t shirt that can be cut.2. Draw the outline of the required chin skirt as required. Please inspect the seams of your helmet to see how much space is there.
Normally, brands other than SMK and LS2 mid range model do not have the noise issue... Its mostly exist in Studds and Steelbird n other locals...
And noise of air comes from air vents, flip up sides ...