Luffy first used the Gear Four techniques in Chapter 784 ("Gear Fourth") of the manga, after which they first debuted in Episode 726 ("Gear Fourth! Luffy vs The Admirals Luffy gear 4 vs kizaru 126 luffy is not able to fight him like he normally would its a tie either way I mean sure it is absurd that a 19 year old is going to not only become the PK but the strongest top tier everThere is no way Gear 4 Luffy could beat Nightmare Luffy in strength I just rewatched Thriller Bark ark and came to realised that Gear 4 Luffy can't beat Nightmare Luffy in brute strength It is true that Gear 4 Luffy is faster than Nightmare one, but speaking about brute strength, G4 Luffy is no match Luffy's King Kong Gun split half the Luffy Gear 4 One Piece Haisoka Luffy gear 4 tank man