Here's something that is not a bad idea to carry a extra set of. It is the straps that hold the DJ carbon bucket up to the frame rails or headers. They can possibly be damaged during a fire or once in a while towing back to the pits the bucket will get banged into something possibly damaging a strap.
Straps are sold each and header mount are shown in the picture. Racer can choose from frame rail or header mount in the drop down menu.