I bought a 2003 Suzuki JR50 for my 4 year old son, he just turned 5 and he is wanting more out of this little bike. I'm not sure if this is true or not, but I hear this bike has a "hidden gear" to make this bike a 2 speed? I found a diagram at: http://www.dirtrider.net/teamdrn/dat...ox_mod-med.jpg
that shows how to grind out a piece to allow the shaft to move up and down. I read somewhere that this motor was put in a scooter not sold in the U.S.A. and it had a 2 speed transmission. The motor has not been changed, except that the shifter was limited to one gear on the JR50. So if this is true the bike should have a second gear hidden away. I was just wondering if you might have heard about this rumor?