101Leafy researched the games.
Prominence Bow IV

This marvel of technology can slice through shell and tear through flesh.
| Class | Bow |
|---|---|
| Rarity | 9 |
| Attack | 288 |
| Fire | 160 |
| Slots | 2 |
| Price | 61,900z |
Upgrades
| Upgraded from | Prominence Bow III |
|---|---|
| Upgrades into | Prominence Bow V |
Can also be made new at the smithy.
Upgrade tree from モンスターハンターポータブル 2nd G 公式ガイドブック (Enterbrain, 2008), page 800.
Materials
HvyRathalosShl ×6, StrRathalosWing ×4, Rathalos Ruby ×1, HvyLavasiothShl ×4