Experience this electric bicycle built with a half-motor, featuring a 36V 350W motor. Reach speeds of 50 to 60 km/h. You can also upgrade to 48V. It comes with a lithium battery, though the current range is 20 km. You can upgrade the battery to extend the range to 50-60 km. Before negotiating the price, please search online to check the details and current market value, then give me a call.