HELP popping noise when turning on a 400ex

[rubicon500kid]

ok I put my new bars on and I was testing how it feels so I was turning and i here a pop coming from my right side so I stop it and I tell my lil sis to turn the bars and my a-arm is moving not up and down but side to side is it exposed to do that what could be wrong with it ?

i thinks its my bushings how hard is that to replace and will i still be abel to ride with it like that