Here are 4 Shoei Helmets I made myself for Career. First 3 are for KTM, last one is for Yamaha.
Simply extract .rar file, then copy the file and paste it in C:\Program Files\MotoGP 18\motogp18\Content\Paks
Simply extract .rar file, then copy the file and paste it in C:\Program Files\MotoGP 18\motogp18\Content\Paks
https://www.racedepartment.com/downloads/career-helmets-shoei-ducati-and-honda.25246/