The bumpers are 4ft - 7 1/4 inches from tip to tip.
As for chroming such a large alloy item it need 3mm of copper first . Very few will do it , I did make a blunder with a firm in the South a few years ago spoke to the father in Jan told a couple of months waiting list . So sent off a set. Kept giving a call after that time to be given excuse after excuse by the son who had taken over after almost a year his attitude had become nasty as he f/ed etc at me along with being ignorant and a large price rise. He was told to send them back and he did FOC. I still remember that firm. I keep lists of firms I can trust for certain jobs as they are harder to find.