Hi Laner,
I've heard different opinions on the Joyner!
A chap I spoke to had real trouble getting parts for one. Not sure who makes them!
I believe they're not the best off roader, strength etc
Another young lad I spoke to had a 650cc, he was 17, road legal machine and he said it was underpowered
But then I've spoken to one guy that thought it was amazing, the best thing ever!!
Others on here might tell you different!
Good luck on your quest for info ;D
Steve.