Supply Boxes provide you with all the necessary items to rebuild and upgrade your vehicle, including Spare Parts, Gold and Gems.

There are currently seven boxes to obtain:
  1. Regular Box (Wooden box)
  2. Super Box (Blue Box)
  3. Legendary Box (Gold Box)
  4. Steevy's box (Available in the store for monkey wrenches)
  5. Giant Box (Purchase only)
  6. Super Body Box (Purchase only)
  7. Super Part Box (Purchase only)
Eventually, new boxes will be added to the game.

You can obtain Regular and Super Boxes by winning the Quick Fights. These boxes require time to open.

The Legendary box is given by successfully promoting to the next League. There's also a slight chance to get it by completing a Stage.

Also you can use your wrench keys and open the Steevy's box in the Store. You can open up to three Steevy's boxes per day.

You have only 4 slots to store the unlocked Boxes from Quick Fights. Every of these Boxes require a certain amount of time to open. When all slots are full, you won't get a new Box by winning a Quick Fight until you free one of the slots.

Purchased boxes, and Boxes won in Leagues and Champioships are instantly opened.