those clones are 20HPs same engines but copies can you tell me the out put final results any pics or video ? I shared a pic of a China sports bike fitted with CB250cc Honda engine I asked the poster of that bike about response but he didnt replied...
CM/CX/CB/CN Honda and Clones all are identical from inside and are 20HP engines... GN 250 cc is far better power then these.. no doubt it will have less good exhaust tone .. but power to weight ratio will be mind blowing..