Jeep was nice enough to put a storage tub under the rear cargo area of a JK wrangler. Problem is, it's tiny. Uneek 4x4 have made an enlarged tub that replaces the factory one and greatly increases the storage capacity. Purpose built to clamp down an Optima D31A battery as well.
Perfect spot to fit a 2nd battery or just tools and recovery gear, especially for diesel owners.
Suits All JK Wranglers