... CCC,EN15194,RoHS Let's make things better!Electric bike kit 12-28"wheel,24-48V CE,CCC,EN15194,RoHS Let ... 32km/h(USA&Canda) warrantymotor-2 years(guarantee replacement in first year, guarantee repair in the next 1 years)Battery and ... front or rear wheel with the one provided in the kit b.Fasten the controller,battery and other small parts c ... to worry trafficJam or air pollution! electric bike motor kit