The Reaper wheels, released on May 29, 2018, are a collectible item that can be used to customize a player's Battle-Car. They provide no advantages while in use and are purely cosmetic.
There is a random chance to get them from the Impact Crate, or by trading up 5 rare items from the same crate. They can also be traded between players.
The Reaper wheels are classified as Very Rare.