High Quality Material: The electric bicycle conversion kit is made of high quality aluminum alloy, copper, and ABS materials, which is durable and has a long service life. Waterproof Connector: Hub motor kit, the connection method is a waterproof connector, don't worry about rainy days, suitable for outdoor riding. DIY Upgrade: Suitable for DIY electric bicycles, turning your ordinary snow bikes into electric snow bikes, greatly enhancing the fun of riding, very practical. No Noise: Brushless hub motor realizes noise free operation, strong load bearing capacity, improves comfort, and ...