This is a new old stock ENYA 21X T.V. AL-CHROME glow engine, recognized as Model 4101 and made in Japan. This particular version features the high-performance aluminum-chrome plated cylinder liner, which offers exceptional durability and heat dissipation for serious RC enthusiasts. The engine is in pristine, unused condition with no signs of combustion or mounting, retaining its original factory metallic luster. The set is remarkably complete and includes the original red and black ENYA box, the factory-matched muffler still sealed in its original plastic packaging, and the needle valve assembly with a wrench, also in a sealed bag.