Vault Hunters stand out when they wear rare cosmetics. The Yabai head is one of those items. It is a clear mark of time spent exploring and finding everything the game hides. The head is not a random drop or a cheap buy. The only reliable way to get it is to fully upgrade your Storage Deck Upgrades so you can unlock the reward tied to that milestone Borderlands 4 Cash.

Storage Deck Upgrades increase how much gear you can carry. They use SDU tokens found across the world. Each token raises one part of your storage or one extra slot. Players need to collect every token on a single character to hit the maximum SDU level. When you reach the top tier the game unlocks the Yabai head for that character as a reward for completion.

You find SDU tokens in many places and from many actions. Look for hidden Survivalist Caches during exploration. Disable Propaganda Speakers in enemy zones and search Silo structures in bases. Clear special map markers and take on mini bosses and unique side tasks. Each of these can give you another token, so aim to clear all points of interest you find on the map.

Make a simple plan to collect them faster. Open each unexplored map icon and mark what you have done. Use fast travel to move between dense areas and clear small objectives while you are passing through. Play with a friend so you can cover more ground, or run repeatable activities that are known to carry SDU tokens. Keep a small wishlist in your head of the token types you still need so you do not waste time on repeats.

Once you have every SDU token and your Storage Deck Upgrades are maxed out the Yabai head becomes available. The head is both a cosmetic and a status item that shows you finished a large scavenger hunt. Along the way you will open many caches and complete many side tasks that also drop loot and u4gm Borderlands 4 Cash. That extra currency helps pay for vending machine buys or quick upgrades before the next run.

The hunt for the Yabai head is a long one, but it gives steady rewards every step of the way. Check every corner of each region, disable the speakers you see, and mark silos and caches to revisit if needed. Collect tokens methodically and balance solo runs with teamed play if you want to speed things up.