RCBearings has the best prices and fast shipping for bearings for my older out-of-production r/c engines. The only place I buy my bearings.
Bought for old OS 46SF. Perfect fit and very smooth.
Fast: 5 Days to France ( EU ) at 1/2 price.Kool.
I bought 2 sets of bearing for my OS.91 HZ, One normal set and ceramique one. I will be back to wrote about usage and quality.