Lightning Release Chakra Mode

By wrapping his body in a layer of Lightning chakra, the Fourth Raikage can electrically stimulate his nervous system and speed up his neural synapses to react faster to danger and push his physical prowess to the absolute limit, allowing him to gain tremendous raw speed and monstrous power.

While using this technique, his reflexes are comparable to that of Konoha's Yellow Flash, making it difficult, if not impossible, even for the Sharingan to keep up with him. By combining this armor with the Body Flicker Technique, he can even dodge the Amaterasu at a split second, as well as Jūgo's Cursed Seal Chakra Blast at point blank range. The armor also increases his defense, drastically reducing, if not completely negating, damage from incoming attacks as even a direct Chidori was barely able to pierce his chest. In addition, the armor seems to increase his strength, though this could be part of his own natural abilities. He apparently developed this technique years ago since he is seen using it before Killer Bee became a Jinchūriki.

Darui and C's reactions when they saw A preparing to use this jutsu though implies that there are serious side effects to using it; which is understandable since the stronger the jutsu the greater the side effect.

In lieu of tailed beast chakra, the Raikage uses this lightning armor to empower himself when performing the Lariat, producing the same effects due to his high-powered chakra.