Two-pack of high-performance 12V 550 40000RPM motors designed to upgrade power and speed in your child's toy car. Made of strong plastic plate fused with high-quality motor, this toy car gear box ensures durability, top performance, and extended lifespan, delivering exceptional value for your investment Impressive high-speed 12V550 40000RPM drive motor gear box with impressive features such as 12V DC voltage, high speed of 40000RPM, highly compatible 12mm axle hole diameter, and compact motor diameter of 35mm. This powerful combination guarantees unmatched performance and a smooth ride for your child Experience simplicity in installation and replacement. This gear box is not only designed for high performance but also for easy use. Model numbers are available for simple identification and gadget compatibility. Perfect for use in ride-on toy cars, especially those using a 12V motor gear box Enjoy advanced customization for car modifications. With its high-speed function, this 12V motor gear box easily adapts to most children's toy cars, providing a seamless upgrade for an exciting and smooth ride that your kids will enjoy Installation is a child's play with quick-connect cable connections that don't require soldering. Quick installation or removal of gear boxes is. Check the car's battery carefully to ensure it works properly. Confirm that the battery is undamaged and the battery cable is properly connected for optimal performance