I had one of the sunL hanma 110cc knockoffs, the motor was probably the nicest part of it, seeing as it was a clone of a honda motor(just missing the honda logo) the rest of the machine was poorly constucted, and cheap. I had to weld the swingarm near where the carrier assembly bolts in... it cracked after a few months, with no abuse. I filmed my friend on his yamaha moto4 yfm80cc which smoked the 110 because of its poor drive train (no power with its automatic setup) but it does go pretty good when you have it running wide open at high rpms. check it out----i tried to embedd the video but it wouldnt let me so heres the link
http://www.youtube.com/watch?v=JKHxn4Qw_1E