my son was riding his Yamoto 48cc quad pretty hard and wound up blowing out the left rear Bushing/Bearing. I put it like that because what was left of that area, was left in a stream, where the chain come loose. I need to know if it is a bearing or bushing and what can I replace it with. Ive spent about 3 hrs now researching and can find no part #. Thanks!

 

Its a bearing!