Here is my problem/question. I am building a chopper and my frame uses a 75 kz400 neck. My doner bike is a 81 kz440. When I tried to put my 440 front end on the 400 neck the top bearing id was to small to fit the stearing stem of the 440. The races measure the same so I figgure I just need some 440 stearing stem bearings. The place I went to misordered the parts (np they will fit my 1000) but that caused me to look at allballs website. They list the same part number for the 400 and the 440. Now I am not sure what is going on. I don't want to order a $40 and be wrong. Any ideas?
