The SR1 is developed in the wind tunnel , so that it meets the high standards of racing helmets. The SR1 causes no lift and no buffeting is , towards stability and no drifting.
A movable spoiler on the rear side of the helmet takes an adapted stability at particularly high speeds. For this purpose, the SR1 is still extremely quiet.
Via a controller at the side spoilers noise insulation can be individually adjusted. Will you choose a quiet ride or do you want to hear when someone starts overtaking ?