These wheels are built for stiffness and strength thanks DT Swiss Competition spokes and a deep rim profile. They’re not light wheels but weight is often misunderstood. More weight means more energy is required to propel the bike forward, most noticeable when accelerating. But when cruising at high speed, heavier wheels have a flywheel character that makes the bike feel like it wants to keep going. Light wheels may climb best but heavier aerodynamic wheels improve descending.