I bought a new plug for my kids Predator 90 today and didn't have the recomended plug. They had the same plug,one size hotter. This actually seemed to give the bike more power. I was wondering if this will hurt the bike. Could it overheat in the summer?
Thanks

 

It could, do a plug check. If it is beer bottle brown it is OK, lighter bad, darker bad (though darker will not fry engine). One plug hotter should not make that much of a difference though.