Some bearing questions

I was wondering what bearing come in a speedaholic and magicyo t5
Also, what bearing works the best for yyf shutter? Would a center trac x be good?
Also wats does spec and x mean?

Personally I like flat bearings like onedrop 10 ball because they are relatively cheap and play as good or better then con cave bearings. Thats my recommendation. spec and x are types of bearing companies.

Hope this helps

Spec is simply the a name of YYF’s standard 8-ball bearing.
The Spec X is a 10-ball version of the Spec bearing

center trac bearings work best with the shutter

I have a CT (not x) in my shutter and like it alot. I’m sure the the CTX would be even better!

What comes in a speedaholic and t5?