This is what happened when I went to the Post Office here in Oregon to inquire about shipping a stripped '73 Norton frame. I showed the agent a picture of the frame and gave him the H x L x W and weight measurements. He did his calculating and then said it is too big and the USPS will not ship it. End of story. Someone on the Forum stated you could ship via USPS coast to coast for $30 bucks. I found this not to be correct, at least with this agent, maybe you can find out otherwise. FYI.