U 663 A durable rim, available in many configurations, for reliable load carrying. This tough rim withstands the high stresses of city e-bikes, whose batteries allow you to cover long distances. Available in four different sizes: 20", 26", 27.5" and 29", to suit all configurations of modern city bikes. Finally, the reinforced rim profile supports a total system weight of up to 180 kg. Whether you are taking the kids to school or doing your shopping, you can do it all with this rim built to last!