In Bridger Western, DIO’s Bone is generally treated as a one-time-use item for progressing to the Heaven-related content, not something that “lasts” over time like a permanent gear item. One source tied to Bridger Western’s 2026 guides points to corpse-part farming and says DIO’s Bone is obtained from the relevant boss/content flow rather than being a durable item with a lifespan.

What that means

  • If you mean how long until it disappears , the practical answer is: it lasts until you use it.
  • If you mean how long to get one , that depends on the spawn/farm route and luck, since the game’s corpse-part guides emphasize farming and spawn-rate hunting.
  • If you mean how long to keep it in inventory , the available references do not show an expiration timer for it.

Related item info

A separate community discussion about DIO’s Bone in another Roblox context says it has a 16% drop chance from Heaven Ascension DIO, which supports the idea that it’s a drop-based progression item rather than a timed one. That said, that source is not specific to Bridger Western’s exact current balance, so I’d treat it as helpful context rather than a guaranteed game-specific stat.

TL;DR

DIO’s Bone in Bridger Western does not appear to “expire” on a timer; it seems to last until you use it , while the harder part is getting it in the first place.