I did a quick search but didn't find any definitive numbers. People say what their manifest says, but that is an estimate in most cases.
How much does an ARB bumper weigh?
How much does a Slee Short Bus bumper weigh?
How much does the stock bumper weigh?
How much does an ARB bumper weigh?
How much does a Slee Short Bus bumper weigh?
How much does the stock bumper weigh?