... bottle lithium ion battery disc brake 7.5kg completed weight Kit NameDescriptionUnit PriceFront drivemotorDiameter 108mm, 2 kg,fork 100mm, 36V 350W ... ,with sensor, disc brake optionUS$72.00Spokesand rimdouble-wall aluminium rim,26" with 13g spokesUS$15.00Controller9 MOSFETs,for ...