My GT-Air is noisy on the TV, but it is most quiet helmet I got in my biker's life when I ride my wife's Street Triple, and this whatever the speed (and it was the same with the Monster before). The helmet is designed to be in the air flow, and on the MV it is not... The noise is coming from this situation. I would think a hole in the windscreen to allow some airflow to come in may solve the problem. But the way proposed here by @TedW
is likely to give some good results...
Turismo Veloce in France
Ride with us in Vosges :
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