I found an old thread on parts for these things, but it just trailed off.

Does anyone know where I can find parts for one? I think the one I have here is a 300, and I am looking for a starter.

 

Let me try it this way... Does anyone know where I can find a starter for a Hart Cart?

 

Found these bikes under the names bnx and bmx. Mattas in Pennsylvania has parts Doug at 814 931 6311. Also www.electric bike she.net out of Canada. Will have to call to get parts. Hart made a 300 4x4 bmx did not same parts as 2wheel drive believe 500 4x4 bmx gear same will have to confirm on your own. Engines made by linhai so many engine parts available on eBay. Also many linhai bighorn parts will work. Took some time to find parts myself but available

 

Looking for parts for Hart Cart