I have heard of a big bore kit for a YZ85 , if I recall it is a 105 cc or around there. Does anyone know what I am talking about ?
If so, any if would greatly be appreciated.
Thanks,
Raz
Wiseco has a Supermini piston, its 767M05250. It takes it to 103.5cc. If you are racing, you will need to have the cylinder ported after it is bored. If this is just a trail bike you can leave them low for a little more bottom end.