Jan 06, 2013
ninecontinent electric bicycle conversion kits
1:36-48-60v 250-350-500-800w
2:dropout:100mm
3:bike dics brake
Electric bicycle conversion kit cover:1) A:motor with doublewall rim DC 36V, 150W, 250W, 300W; DC 48V, 150W, 350W, 500W. front and rear wheel motor are both...