Engine Trouble Conrod bearings



Im wondering if anyone knows some better quality little end and big end needle bearings for a 48cc motor, I've just had another one blow up due the big end splitting up and im in the process of pressing my crank apart to hopefully replace the big end pin and bearing with one from a ktm 50cc but I was hoping someone might have all ready done this and know what the bearing sizes are and where to buy them also has anyone ever had their cranks ballanced and noticed much of a difference in vibration at high rpm thanks.
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