Installation guide is NOT provided and professional mechanic installation is highly recommended. Doesn't come with installation tools, you will need some basic tools to install this bike Actual colors of the product may vary slightly, due to different device screen settings, lighting conditions, slight differences in product finishes and other factors Speed limit and range are for reference only, it depends on the weight of the rider, road, and weather conditions Laws regulating e-scooters and e-bikes vary by state. In Victoria, for on-road use, e-bikes must adhere to 250W and 25km/h restrictions. Speed and range depends on weight, road and weather condition. Batteries lose capacity overtime naturally, so the distance per charge will decrease overtime Poor maintenance and any modifications to the product or components