Electric bike conversion kit Type: front wheel kit. Autonomy: 24 to 50 km kits with brushless motor. (autonomy is more if you pedal). Speed: 25 km/h (for eu), 0-32kpm(for us), . Faster than a car into the traffic jam! Battery life: 300 cycles. Operation temperature: 4 to 38 ¿¬pc (40 to 100 ¿¬pf) Weight: 17 to 24 kgs (36 to 52 pounds) Charge time: within 8hours Different power brushless motor for different customer(24-48v, 200w-600w available) Batteries: different battery pack(voltage system) for different motor, sla, ni-mh, lion-poly battery pack available Charger: 110/220 volts three stage intelligent battery charger Could be easily installedl on 99, 9 % of bicycle. Available in 20, 24, 26, 28 inches sizes. 710*700*260MM