DIY electric bicycle kits Electric bike kit 12-28"wheel,24-48V CE,CCC,EN15194,RoHS DIY electric bicycle ... kits Electric bike kit 12-28"wheel,24-48V CE,CCC,EN15194,RoHS Electric systemMotor: Front wheel,light,high speed,brushlessGreat hub ... motor,16inch 28inch wheel optional.DISC brake optionalBattery: 24V/10Ah ...