> For the complete documentation index, see [llms.txt](https://wiki.boxingstarx.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.boxingstarx.com/game-system/gear/bio-gear.md).

# Bio Gear

<figure><img src="/files/th4vaIxpBug4llThDRon" alt=""><figcaption><p>Bio Gear</p></figcaption></figure>

1. **What is Bio Gear?**

   * Bio Gear adds another layer of strategy for **Boxing Star X** players.
   * All Characters can equip **one Bio Gear** at a time.
   * Bio Gear cannot be equipped by multiple [Characters](/game-system/character.md) simultaneously.

2. **Upgrading Bio Gear**

   * Players must possess a certain number of the same Gear to upgrade some Bio Gear.
   * Certain Bio Gear requires special parts to upgrade.
   * **Bio Gear** can only be **Upgraded** and cannot be **Graded Up**.

3. **Bio Gear Max Level and Mileage**

   * If a player's Bio Gear reaches Max Level, any further upgrades will be converted into **Bio Gear Mileage**.

4. **Bio Gear Options**
   * The **Main Option Value** increases as the Bio Gear's level rises.
   * The **Fixed Option Value** does not change, even as the Bio Gear's level increases.