This TeraFlex cargo rack will increase the storage space on a JK for extended outdoor adventures. This Alta cargo rack has black rails and sits above the spare tire to keep supplies out of the way. With a capacity of 75 lbs., it can hold an enormous amount of supplies with this 46" wide rack that is 20" deep and 4" high. It works with a spare tire up to 37";. It bolts on with basic hand tools.