After a trip of 200km with a few palls who have this kit mounted ,I said no way to put that thing in my kymco ,the kit it's arrived but I think I don't even go to get it from mail office . The reasons are with that kit the engine is overheating (my palls need to stop at every 25 km or so ) the power was obvious but I'ts not worthing .One of my friends since he put that kit all pieces start to broke ,gears , variator ,strange noises from engine ... and I don't want troble .I'm glad beacouse I could see those kits at work (on chinese scoot with gy6 engines ) before I pay the money for it .I prefer to stay with stock engine and reach 45000km like slinger than put that thing in and do ...who knows 2000km and change all parts on that scoot... So I think It's better to dont look for cheap kit ( this one was 55$)