Electric bicycle kits covers: 1) A:motor with doublewall rim DC 36V, 150W, 250W, 300W; DC 48V, 150W, 350W, 500W. front and rear wheel motor are both available (100mm and 135mm for forks) for bolted disc brake and geared freel wheel design B: intelligent contorller with Auto crusing/regeneration/pad/cycleanalysor/low voltage protester/forward and backward/3speed limited C:LiFePo4 36v 10A /24V 10A battery and holder:rear rack D:charger 24/36/48v 1.8/3.0A E:throttle with battery indicator and power switch F:electric brake (save version) Parts: torque arm ,double-wall rim,battery cable,battery indicator All parts get CE approval Electric bicycle kits' fetures 2) Waterproof high density sealant, sealant ring 3) High efficiency: 85% 4) High quality raw martial 5) Thick magnet, cold rolled silicon 6) 27mm height of stator ,0.53mm brass wiring 7) High climbing ability: 40 degrees 8) 5-year guarantee 9) Easy to understand 10) Connect the wire with same color 11) 2m lever of front motor, handgrip, brake lever 12) More options to assemble 13) 200w for Australia and new zealand 200-250w for Euro ,350-800w for American Custom requests are available. Please inquire with the information as follows: 1) Wheel size of your vehicle 2) Top speed you require for 3) Vehicle application Outer packing: Carton with polythene on each side, strengthened with double straps dia :60*60*24mm 360sets for 20GP 800sets for 40GP deliverytime:15days minimum order:50sets by sea