theprocess
Well-known member
...Arai Corsair V but heard its really noisey due to all the ventilation...
Bingo! Nothing any manufacturer can do about that. Ventilation = holes in the shell.
Also, note that the "race" helmets (vs "street" helmets) are meant to be in the tuck position to maximize aerodynamics and ventilation so your bike/riding position might have something to do with noise.