Pack of two 12V 550 40000RPM motors designed to enhance power and speed in children's ride-on toy cars. Constructed with durable plastic and high-quality motor components, these motors deliver reliable performance and long-lasting durability. The 12V 550 motor features a DC voltage of 12V, rotational speed of 40000RPM, 12mm shaft hole diameter, and a compact 35mm motor diameter, ensuring efficient operation and smooth performance. Designed for easy installation and replacement with quick-change wire connectors that require no soldering. Compatible with most 12V ride-on toy cars, offering a straightforward upgrade for improved functionality. Includes model numbers for easy identification and compatibility reference. Ideal for use in children's ride-on vehicles requiring a 12V motor. Gearcases can be quickly installed or removed. For optimal performance, inspect the vehicle's battery regularly, ensure it is undamaged, and verify secure cable connections. Color: Black. Material: Plastic and metal. Slight color variations may occur due to lighting and display differences, which do not affect product use. Package includes: 2 pcs 12V 550 motors for kids ride-on cars. Other items not included. Measurement tolerance: +/- 1-3cm.