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the smallest & lightest ebike kit - qiroll friction drive motor

qiroll is the smallest and lightest portable electric bike conversion kit with battery and super easy installation , a stealthy friction-drive system that is highly efficient. by carrying two sets batteries weighing a total of 2kg, you can achieve a cruising range of nearly 142km. each h70 battery has a cruising range of 72km and also features a 200w regenerative braking function, which can be used in place of traditional braking. in addition, the friction drive structure allows the motor to be separated from the tire, allowing the bike to be used as a normal bicycle even when the motor is not in use.