Yes, I am finding earplugs for you. When I was searching on google then I found a lot of earplugs, there is a lot of variation of them. According to your needs, I was finding custom earplugs because only custom earplugs can fulfill your needs. If you use very cheap earplugs then it won't work perfectly. It won't give you fully hearing protection from the wind and engine noise.
So my suggestion is you can use custom motorcycle earplugs thus you can protect your full hearing.
I want to share these websites that I found on google. I will share a video as well so that you can get more information after watching this.