A Bit Chip (ビットチップ Bitto Chippu) is a circular part held in place by the Attack Ring. While Bit Chips were optional for the most part, it would usually come with decals that could be placed on it of it for aesthetic purposes. These stickers would usually portray a Bit-Beast from the Anime. Since Bit-Chips were short in length in their early stages, old Chips will not fit without Bit Chip Covers.
All Bit-Chips on the Japanese versions of the Beyblades had codes imprinted on them. These codes could be used to unlock the Bit in the game, Beyblade Fighting Tournament.