Arai helmets pack with visor, 2 of them are Doohan helmets and one custom model based on Doohan too.
Put the content of .rar in Steam\steamapps\common\MotoGP™20\motogp20\Content\Paks.
Put the content of .rar in Steam\steamapps\common\MotoGP™20\motogp20\Content\Paks.