One Piece 4th Gear Site

Fourth Gear isn't just bigger muscles—it's Luffy inflating his armament haki-coated muscles into a massive torso. He compresses his rubber body like a spring, storing insane tension. The result? Unstoppable bouncing attacks that hit like meteors. Moves like King Kong Gun (massive fist) and Culverin (snake-that-changes-direction) make him untouchable. But the drawback? After it runs out, he shrinks into a tiny, helpless old man for 10 minutes.

"Gear Fourth showed Luffy evolving from brute force to tactical genius. What's your favorite form? Comment below." Article / Blog Post (Key Sections) Title: One Piece Gear Fourth Explained: Forms, Powers, and Costs one piece 4th gear

"Unlike Gear Second (speed) or Third (bone balloon), Gear Fourth is muscle balloon. Luffy bites his arm, blows air into his muscles, and coats them with Busoshoku Haki. His body becomes hyper-resilient and hyper-elastic—but he's not just big. He's constantly bouncing because his rubber properties are maxed out." Fourth Gear isn't just bigger muscles—it's Luffy inflating