|This article is about a/an changer in Juken Sentai Gekiranger.|
- "Sharpen! Blade of the Beasts! Beast On!"
- ―Transformation call[src]
Strongest Transformation Knife-Hand SaiBlade (最強変身手刀サイブレード Saikyō Henshin Shutō SaiBurēdo) is a transformation device used by GekiChopper, stored in Ken's Beast-Fist Henshin GekiChangers until Ken brings it out and uses transformation call "Sharpen! Blade of the Beasts! Beast On!" (研ぎ澄ませ！獣の刃！ビースト・オン！ Togisumase! Kemono no yaiba! Bīsuto On!) to become GekiChopper. The SaiBlade is a right-hand gaunlet with two modes: the hand-like SaiBlade Finger (サイブレードフィンガー SaiBurēdo Fingā) that also acts as a gun-like weapon and the blade-like SaiBlade Cutter (サイブレードカッター SaiBurēdo Kattā).
At the climax of the Legend War, the SaiBlade as a transformation device was made redundant when GekiChopper sacrificed his powers with the rest of the first 34 Super Sentai to destroy the invasion force of the Space Empire Zangyack. Resurfacing a Ranger Key, the power of GekiChopper would be used by the Gokaigers to assume the form via the Gokai Change. Ultimately, the Gokaigers returned their borrowed powers to their rightful owners after overthrowing Zangyack.