Optimized Performance: Upgrade for 4/4 Lite/4 Ultra/3Llite Electric Scooter with our speed modifier that enhances the speed range from 20 to 32 km/h, ensuring a faster and more exhilarating ride.Compatibility: Specifically designed for 4/4 Lite/4 Ultra/3Llite models, this accessory seamlessly integrates with your scooter's existing systems without compromising the integrity or functionality of your vehicle.and Reliable: Crafted from materials, our speed modifier is built to last and withstand regular use, providing you with a dependable performance enhancement.Easy Installation: This accessory is designed for easy installation, allowing you to quickly upgrade your scooter's performance with minimal effort.Important: The for 4 Ultra electric scooter can accelerate to 32 km/h, while the for 4/4 Lite/3Llite electric scooter can only reach a maximum speed of 20 km/h.Color:BlackMaterial:plasticPackage Contents:1 * Scooter Speed ControllerOnly the above package content, other products are not included.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. szrh21