The No.9 50d rims are designed to be a lightweight and stable starting point for building exquisite wheels, with a generous inner width that pairs well with a variety of tire sizes. They offer an aerodynamic advantage over 30d rims, creating a stiffer and more robust platform. Suitable for long days in the saddle, cutting through the wind and hammering finish line sprints, they are perfect for all terrain. These disc brake-specific rims come across stylishly, with a clean design and aesthetic.