Description Pack of two feature-rich 12V 550 40000RPM motors designed to enhance power and speed in kids' ride-on toy cars. Constructed with durable plastic housing and high-quality motor components, this upgrade offers reliability, strong performance, and extended durability. The high-speed 12V550 40000RPM motor features a 12V DC voltage, 40000RPM speed, 12mm shaft hole diameter, and a compact 35mm motor diameter, delivering consistent performance and a smooth driving experience. Designed for easy installation and replacement with quick-connect wire connectors—no soldering required. Compatible with most 12V ride-on toy cars, allowing for straightforward upgrades and customization. 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 best results, ensure the vehicle’s battery is in good condition and all connections are secure. Color: black Material: plastic + metal Note: Slight color variations may occur due to lighting and display differences. This does not affect product functionality. Package Contents: 2 Pcs Kids Ride On Car 550 12V Motor. Only the items listed are included. Note: Measurement may vary by +/- 1-3cm due to manual measurement.