The TECH L4 Engine Model is a high-quality, sealed miniature internal combustion engine designed for RC cars, RC trucks, RC motorcycles, and hobby vehicles. Manufactured by TECHING in China, this 3D metal turbocharged inline-four engine kit is a precision-engineered DIY assembly model suitable for advanced hobbyists, collectors, engineers, and students aged 17 years and up. With its durable construction, realistic design, and compatibility with a wide range of radio-controlled vehicles, this working model engine provides a powerful upgrade for those who want authentic mechanical performance. Ideal for STEM education, mechanical engineering projects, RC enthusiasts, display models, and hands-on learning, the TECH L4 Engine Model is both a functional miniature engine and a collector?s showcase piece. Perfect for anyone interested in mechanical kits, model building, educational engines, engineering toys, and realistic RC upgrades, this engine combines craftsmanship, durability, and performance in one package New / sealed