I think if you do a search on here, you will find Marksman bearings or Bikebearings (same company I believe) recommended.
I’ve used them before for rear linkage bearings with no problems and have just ordered front and rear wheel bearings from them.
If you go to their website, search by bike make / model, it will show you the parts available for your bike.
You’d be advised to do a bit of research on here Re this issue as well. I think I’m right in saying that it’s not uncommon to have a “little” play in this department. Some have iirc replaced numerous bearings in the rear linkage and still had a slight amount of play.
So I guess it depends on how much play you’ve got and how far out of yamahas tolerance it is? I’m sure that someone far more knowledgable than I will be along shortly to enlighten you.
Good luck. 👍
Here’s a link to get you started.........
https://shop.marksman-ind.com/yamaha-suspension-bearing-kits-415-c.asp