Ive been lookin around for some cheaper priced ball bearings to replace the worn out trans and crank bearings in the suzuki ts90 engine I'm building. I had purchased japenese made koyo ball bearings for the last blaster motor I rebuilt and they were NOT cheap, around 30 bucks a piece at the local yamaha dealership. Anyways, I came across plenty of bearings on egay that are made and impored from china, and are only around 5bucks a piece. So basicaly my question is, are chinese ball bearings any good?