Originally Posted by MotorBicycleRacing
One of the superposed selling points of those 48cc motors was bigger bearings.
I must admit I'm blown away by the obvious quality differences in this engine. It's head and shoulders above any 66cc I have ever seen.
Too bad the factories didn't use THIS jewel as a baseline for the 66cc engines.
If more is better, then too much is just enough.
If you can't afford it, build it yourself.