This two-pack of feature-rich 12V 550 40000RPM motors is designed to upgrade the power and speed of your child's ride-on car. Crafted from heavy-duty plastic fused with a high-quality motor, this ride-on car gearbox guarantees robustness, peak performance, and an extended lifespan, truly promising exceptional value for your investment. The impressive high-speed 12V550 40000RPM drive motor gearbox boasts features like a 12V DC voltage, a high speed of 40000RPM, a highly compatible 12mm shaft hole diameter, and a compact 35mm motor diameter. This potent combination ensures unmatched performance and a smooth ride for your child. Experience simplicity in installation and replacement. This gearbox isn't just built for high performance, but also for ease of use. Model numbers are available for easy identification and gadget compatibility. It's perfect for use in ride-on children's toys, especially those using a 12V motor gearbox. Enjoy advanced customization for car modifications. With its high-speed capability, this 12V motor gearbox easily adapts to most children's ride-on cars, providing a seamless upgrade for an exciting and smooth ride that your little ones will enjoy. Installation is a breeze with quick-change cable connectors that require no soldering. Quick installation or removal of gearboxes is now possible. Also, carefully check the car's battery to ensure it's functioning correctly. Confirm that the battery is not damaged and that the battery cable is properly connected for optimal operation. Color: Black Material: Plastic+Metal Note: There is a slight color difference or difference between the actual product and it does not affect the use. Package Contents: 2 pcs Kids Ride on Car Gearbox 550 12V Motor Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.