DIY Electric bicycle kit 200W, 250W, 350W, 500W brushless motors 20", 26", 28" wheel 24V or 36V Li-ion battery DIY Electric bicycle kitKit ... for converting normal bicycle into electric bicycle, easily assembledFront ... 26", 28" (optional)Batteries(10AH li-ion) available: 24V or 36V (optional)Max Speed: 25km/h(EU standard) or faster ...