ive had good luck with my personal china kit. but some of the kits ive built for customers, not so much. on my kit ive road many long mile trips without any major problems for about 4 years(same kit) but i always keep an eye on things and check them often. my customer bikes have had some problems, but i think it was there lack of maintenance or mixing improper fuel ratios.
i like the 2 stroke china kits, but i have moved on to building a 79cc predator as we speak. i might start building these for customers if AGK wouldnt have everthing i order on backorder. hope i get my parts soon,tired of starring at this thing.