Officially just one, but in reality I rebuilt the same cart 3 times almost completely over. The kind of rebuilds/repairs that start with one component and by the time your done the karts been out of commission for six months and no one would even recognize it for the kart you had six months ago.I also have a 95% done minibike ( missing brakes), one push cart (300lb beast with lawn tractor wheels), and am starting on a snowmobile powered micro buggy.