Defense-S is a Performance Tip released as part of the Burst System as well as the SlingShock System. It debuted in western countries with the release of the SlingShock Single Pack Flame-X Diomedes D4 8 Defense-S.
Defense-S is a Performance Tip that features a ball tip with four tabs, and a protective disk that sits halfway down the Performance Tip. Its height is significantly increased in order to facilitate its SlingShock gimmick. Defense-S features a mode-change gimmick, able to switch from "Battle Ring Mode" to "SlingShock Mode".
In "Battle Ring Mode", Defense-S performs a standard ball tip. Since the ball tip is small, Defense-S has a small surface area, not to the degree of Performance Tips such as Orbit, Yard-S, and Atomic. The four tabs surrounding the ball tip act as brakes against KOs by striking against the stadium floor when the Defense-S Combination is struck, at the cost of Stamina. While the increase in height may imply that the ring of Defense-S has a better chance of making contact with the opponent's Layer, it is positioned too low for any opposing Layer to make contact with. However, the ring of Defense-S has four protrusions, which nullifies its Life After Death potential.
In "SlingShock Mode", the ball tip is hidden, revealing a small hole-flat tip that's more akin to Zephyr. This mode gives the Defense-S Combination a huge boost of speed as well as an increase in Stamina thanks to the hole-flat tip. Since the height of both Battle Ring Mode and SlingShock Mode are similar, the Defense-S Combination isn't as prone to being destabilized as other SlingShock Performance Tips. While SlingShock Mode may imply that a Defense-S Combination in this mode is capable of maintaining a Banking Pattern, the four tabs of the tip makes maintaining a Banking Pattern impossible. Of the two modes, Battle Ring Mode has the greater success.
While the increase in height isn't detrimental to a Defense-S Combination's overall performance, Defense-S is outclassed Defense wise by other Performance Tips such as Orbit, Atomic, and Yard-S, making Defense-S practically useless in competitive play.
As such, Defense-S is recommended for collection purposes only.