- Aug 2, 2003
i have heard that you can take a stock z50 and put a xr 70 or xr75 head and piston on it and it will bolt on and run. is this true or what can u do to make it work? also what is the cheapest way to get more power from a z50? id like to bore up to around 80cc unless there is a cheaper way to go bigger.. doubtful.