The Trace series: the best aluminum mountain bike rims in their class! The Trace XC is designed for cross country use and marathons, competitions, but also fast times at your local round. Despite of a weight significant lower than that of most other lighrweight rims, the Trace CX offer good stiffness and strength. The internal width of the rim is no less than 21 mm, allowing 52 mm wide tires and thus provide optimal traction. Because the spoke holes are drilled 3 mm off center, the wheel can be build with a more even spoke tension, which significantly benefits the strength. In addition, the holes are drilled as minimally as possible and in the direction the spoke must have. This improves the strenght of the rim and avoids deflection of the spokes at the nipples to prevent spoke breakage. Like the other rims from the trace series the Trace XC is tubeless ready.