The Boeing 777X's $42 Million GE9X Engine: A Total Game Changer! So,why do these engines cost a staggering $42 million apiece? Meet the GE9X—the beating heart of the Boeing 777X and the most powerful jet engine ever built. Each one is a flying cathedral of engineering, generating a colossal 110,000 pounds of thrust. They’re crafted from space-age materials like ceramic composites and carbon fiber, allowing them to run at blistering temperatures for unmatched efficiency. With thousands of parts a