I have a Honda Cub clone with a 125cc fully automatic. I just put in the 125cc replacing a 49cc and I did a front sprocket change for better top end. I weight 220lbs. I have had it verified by gps to 43mph but it will go much faster, I just havent pushed it yet as I am still breaking in. I am guessing around 50mph and thats pretty dang good for a 220lbs rider.
Here is my bike.
http://www.chinariders.net/showthread.php?t=14447
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