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 a high-quality motor, this upgrade offers durability, reliable performance, and extended lifespan. The high-speed 12V550 40000RPM motor features a 12V DC voltage, 40000RPM speed, 12mm shaft hole diameter, and a compact 35mm motor diameter, delivering strong performance and a smooth riding experience. Designed for easy installation and replacement with quick-change wire connectors—no soldering required. Compatible with most 12V ride-on toy cars, allowing for seamless upgrades and customization. Includes model numbers for easy identification and compatibility reference. Ideal for use in children's ride-on vehicles that utilize a 12V motor system. For optimal operation, ensure the vehicle's battery is in good condition and properly connected. 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 550 12V motors for kids' ride-on cars. Only the items listed are included. Note: Measurement error allowed is +/- 1-3 cm.