Weird chirping

Hey guys. So for a little while now I’ve been hearing almost like a chirping noise that I believe to be coming from the back end. I can only hear it at low speed but I owe that to my RJWC pipe, not sure if it makes the noise at high speed or not. Seems when I’m going slow over rough terrain or slow at all I can hear the chirping. I do have a boot that’s temporarily repaired in the front end, maybe there isn’t enough grease in it and I think it’s coming from the back end? Not sure, never heard anything quite like this before.