Hi Dave my name is dan from aus and about a month or so ago i purchased a set of irp black turnbuckles i installed the little puppys and went for a run 2minutes in i poped a wheelie and flipped her and much to my surprise a screwed ball joint end snapped and the other side bent i thought they would be much more robust than the stock which i have been running for about a year with only a slight bend in one side,i havent sent a msg sooner as i cracked it and she has been shelf sitting ever since ,now my question is ,is this common and will the heavy duty ones do the same .cheers dan