Thread: Anyone good with dirtbikes?

So I have always wanted a bike. I was talking to a buddy that has a couple and he told me hes got an 04 125. I think he said yamaha yz125 if that sounds right? lol its in parts right now and he said it just needs a crank bearing. When I was talking to my other friend about buying it he said I should and that his dad can help put it in. Good investmeant? How hard is a crank bearing to put in? Does it have to be pressed?