4D Bottom - Final:Drive

F:D is a 4D Bottom, a fusion between a Track and a Bottom. It is therefore fairly large, to compensate for this merge of two parts. The main gimmick of this 4D Bottom is the automatic change of tip that activates during battle, where the SF-shaped tip retracts inside the base to allow the very wide rubber-coated, Hole-Flat-like shape to make contact with the stadium floor. This mechanism works because two tabs on the side of F:D pull out from the centrifugal force. When they extend, the SF tip comes out of the hole, and when the centrifugal force decreases because the Beyblade loses spin, the tabs pop back inwards and the SF bottom retreats, leaving an aggressive rubber tip with a hole in it. F:D has only found use in niche Anti-Meta combos, but is otherwise ruined by the automatic gimmick which cannot be stopped, therefore it is competitively useless. The intent of the mechanism is to give one last boost of energy to an Attack type, however at such low velocity, the hits are poor, it gets destabilized, and the added rubber surface only serves to lower the customization’s stamina drastically, which is actually how most Beyblades try to win at the end of a BeyBattle.

Use in Anti-Meta Customization
An example of an Anti-Meta custom that F:D can be used in is MF-H Gravity Perseus F:D.