B540 (Butterfly 540)

The B540 is an advanced tricking move that combines a horizontal butterfly-style takeoff with a large aerial rotation. The performer uses both legs in the takeoff and completes roughly 540 degrees of rotation before landing.

A standard butterfly kick emphasizes the horizontal, sweeping body line and does not require the same additional rotation. The B540 adds a more demanding spin, so the performer must generate both lift and rotational speed.

It is commonly seen in martial arts tricking, demonstrations, and sport-karate performance rather than as a universal traditional fighting technique. Its exact scoring depends on the event, because tricking itself does not have one single global rulebook.

A practitioner normally needs a stable butterfly kick, safe landing mechanics, and control of the takeoff direction before adding the extra rotation. Training should be done with qualified supervision and suitable mats because the move combines an aerial inversion with a fast spin.