Conquer the mountains! The RS25 is the lightest rim we have ever made and a light version of the RX25. With just 325 g per rim, it is perfect for ambitious cyclists who want to climb the mountains and set up altitude records. But this ultimate wheel for your next mountain challenge is not only lighter at its best, it is also a reliable partner in terms of robustness and durability. The excellent riding characteristics of the RS25 wheels bring your road bike to life. Agile, stiff, fast and aerodynamic, they bring pure riding pleasure on slopes.