Pack of 4 feature-rich 12V 550 40000RPM motors crafted to upgrade power and speed in your kid's ride-on toy car. Made from heavy-duty plastic board fused with superior quality motor, this ride-on car gearbox assures robustness, top-tier performance and an extended lifespan, truly promising exceptional value for your investment. Impressive high-speed 12V550 40000RPM drive motor gearbox is equipped with impressive features such as a voltage DC of 12V, a high speed of 40000RPM, a highly compatible 12mm shaft hole diameter, and a compact motor diameter of 35mm. This potent combination ensures unrivaled performance and a smooth ride for your child. Experience simplicity in installation and replacement. This gearbox is not just made for high performance, but also easy usage. Model numbers are accessible for convenient identification and gadget compatibility. perfect for use in ride-on children toys, especially those using a 12V motor gearbox. Enjoy advanced customization options for car modifications. With its high-speed functioning, this 12v Motor Gearbox effortlessly adapts to a majority of children's Ride-on Cars, providing a seamless upgrade for a thrilling and smooth ride that your little ones will absolutely enjoy. Installation is a breeze with quick-change wire connectors requiring no soldering. Rapid install or removal of gearcases is assured. Also, conduct a thorough check of your car's battery to ensure proper functioning. Confirm that the battery isn't and that the battery cable is securely connected for optimum operation. Color: black Material: plastic+metal Note: There is slight color difference or difference between the actual product and it does not affect the use. Package Contents: 4 Pcs Kids Ride On Car Gearbox 550 12V Motor