Is there any help for these bikes? I have 2 brand new ones.. My 2 boys are already wanting more power... They only have about 40 hrs on them, if that... Any thought without getting to crazy money wise?

 

First things most people do is air filters and piping. You'll have to rejet. That should give them some more power for a little while. Wouldn't go much farther than that seeing as they are so small displacement. But the above shouldn't be too expensive. Peace!