1.electric bicycle motor 2.with high efficiency motor 3.high efficiency 4. ... pay it.For the wheel size, we have 10",12", 16", 17",20", 24", 26", 28" available, please advise us the ... : For 12" wheel, the tire size is 2.125; For 16" wheel, normally we send size of 2.125, but we ... e-bike.Motor Performance: 48V800W Dimention520mm*380mm*190mmWheel2.125-16,2.5-16,2.125-18,2.5-18Brake systemFront/Rear disc ...