I now have a 3rd Chinese clone of the Honda CG125, this time in a quad. It's the 230cc version made by Zhejiang, sold by Taotao. 71mm bore, 58mm stroke, 4 forward gears plus reverse. Like the Lifan and Zongshen it looks to be good quality and it runs well. It does vibrate more than the others at higher RPM but that may be partially due to the frame design. You can't beat these Chinese CG clone engines for a low price reliable workhorse.