Yeah i know which you meant, i was referring to the hub due to a brain fart. But its the one which joins the hub to the inner chassis part.

Thats the part i was on about. As far as I'm aware the bushes aren't easily replaceable like they are on the front, i bent on of my rear arms slightly trying to get the bushes pressed to so had to straighten it again and drill/burn the rubber out. I'll see if i've got a decent picture of just the arm with the poly bushes in.