The onyx steampack is the highest tier of all the steampacks, having the best acceleration and a cool aesthetic of shooting black fumes instead of white. When not equipped, you can find this item in the Accessories section of your inventory.
How to Obtain
The onyx steampack can either be crafted, purchased as part of the Exploring Pack in the crown store, or traded from players.
How to Use
Drag this accessory into an active slot in your Accessories Bar to equip it.