... 10.5kg Warranty: 1 Year Technical information for 48V 500W electric bike convertion kit Kit NameDescriptionRear drive motorDiameter 100mm, 6 kg, fork ... 145mm, 48V 500W, with sensor, disc brake option, with ... Brake160 holes or 140 holes option disc tray 48v 500w electric bike kit with battery dc electric motor ...