Flashfire is a movement gear perk that speeds you up after you kill an enemy with fire. It suits flamethrower and Molotov builds that stay on the move.
Each time fire finishes an enemy, you get a short speed boost. Use it to move to the next target while the area burns.
Strong for fire builds, weak for anyone else. Pick a general speed perk if you rarely use fire.
Overcooker and Major Fire Protection on other Bombero pieces complete a fire loadout.