Re: Needle bearings?
I think all the engines come with needle bearings now. They are an improvement over the old brass inserts they used in the beginning. But I think they all have them now.
I'm not sure that tiny bit of difference in the cc's makes a huge amount of difference.
If I were looking for a new kit I would be looking at the clutch handle since it is the only real difference as far as I personally can see. I'm sure some of the sellers will point out my obvious errors in thinking. I also would not pay much more for the better handle since you can buy it after market for a few bucks.
My posts have entertainment value only. A bike ain't yours till it has your blood on it. Then it owns you.