Yea I was hoping to convert it from a 35mm - 40mm. I guess I'll have to call them monday. It currently has the wrong bearings in it. There is about an inch or so gap between the bearings and the crush tube. I'm not sure but that doesn't seem right to me. So I don't know the bearing width. The o.d. is 62mm and i.d. would be 40mm but the width???