... realize as high as 80% efficiency. e-Bike Conversion Kits:1 Long working life (>10 ... The kit includes motorized wheel,motor controller,speed throttle, power break lever, wire harness· ... Speed: 0-45kpm· Suitable bike frame: 100mm front fork,or 135mm rear fork spacing· Double wall rim special for e-bike ... pedal assistant systemThrottle Twist intelligent speed throttle Maximum speed 25km/h(EU),32km/h( ...