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Spiral Treptune T4 8 Wedge-S is a Stamina Type Beyblade released as part of the Burst System as well as the SlingShock System. It was released in western countries as a part of the Lava-X Anubion A4 & Spiral Treptune T4 Dual Pack.

Energy Layer - Spiral Treptune T4

Main article: Energy Layer - Spiral Treptune T4
Spiral Treptune T4 is a Stamina Type Energy Layer with an overall triangular shape and trident motifs, meant to represent its Japanese namesake; Trishula, a three pronged spear in Hinduism. Like its predecessor Treptune, Spiral Treptune T4 features three large blades to create an aforementioned overall triangular shape. As part of the God Layer System, Screw Trident features a gimmick; the center and blades of the Layer are connected by rubber to create “Bound Defense”, akin to the Jerk Disc.

In theory, the rubber would allow the blades to shift upon impact and absorb the shock of oncoming attacks in order to reduce recoil; recoil that would otherwise result in a Burst. In practice however, due to how hard the rubber is, the gimmick fails to function. This issue is further exacerbated by the triangular shape of the Layer, which creates high recoil and increases the risk of Bursts, which the four medium teeth of the Takara Tomy release are unable to compensate for.

However, despite the high Burst risk, Screw Trident performs well in Pure Stamina Combinations, as its weight distribution creates spin times near or equal to Deep Chaos, albeit without Destabilization potential.

Forge Disc - 8

Main article: Forge Disc - 8
8, like other even numbered Core Discs, is symmetrical and elliptical in shape in order to facilitate a Disc Frame. Each side features four protrusions, each molded into the shape of an "8". Each of the lower loops of the "8"s features gaps, akin to Knuckle, which takes weight away from the center and creates high Outward Weight Distribution and subsequent Flywheel Effect, features theoretically perfect for Stamina. Furthermore, 8 is one of the heaviest Discs in the game, heavier than Heavy, Gravity, 2, 4, and 6 and its use can bolster a Beyblade's KO resistance and Attack potential. However, like other heavy discs with high Outward Weight Distribution such as Gravity and Ring, the use of 8 severely decreases a Beyblade's Burst resistance as a trade off.

Performance Tip - Wedge-S

Main article: Performance Tip - Wedge-S