I've got a project motorcycle which is a bit of a frankenstein. It came to me with a Honda 400T engine but the compliance plate says it's a 1982 CB-250T, looking over the frame though the swing arm at least is definitely off a 78-82 CB400T/CM400T.
I've disassembled the bike completely to get the frame / swing arm powdercoated and now that I've gone to put the swing arm back on I've noticed I've got 2 parts missing, the Swing Arm Pivot Collars. In the attached image they are shown by the red boxes / arrows. I have the bushings (4) shown on either side but not the actual pivot collar. I don't think I've ever seen this part so I'm pretty certain it wasn't in the bike when I disassembled.
How important are these collars? I can't find them anywhere on the net and I'm not sure how important they are structurally?