I bought myself a Genesis from yoyonation.com, and it comes with a center trac bearing and a silicon respond pads and a string inside a mini envelope, and a SPEC bearing in the Genesis. I tried both bearing and they played well, pretty much the same. But I want to ask you what’s the difference between SPEC bearing and Center Trac bearing? I know the Center Trac bearing shape looks different than SPEC.
Happy Throwing! =]