No BCB model has the shock for the lid covering the bilge. Designed such so that it can be removed for working in the bilge area. Not sure why anyone would want to store anything back there as it certainly isnt going to be dry plus gas, oil, battery gases. BCB is not the only mfg. that doesnt have the shock. I believe that most others dont as well. To add a shock you will need to weld or bolt a bracket to the bottom of the lid and screw another bracket on to the lip of the fiberglass at the bottom. Take a look at one of your other compartments and it will give an idea of what needs to be done. Those shocks can be purchased just about anywhere.