Thirty-five millimeters of depth might seem conservative for a wheel marketed with "Aero" in its name, but Roval's engineering data suggests this is precisely where gravel wheels should live. The Terra Aero CLX Rear Wheel pairs that depth with a 25mm internal width optimized for the 40-50mm tire range that dominates mixed-surface racing, creating an aerodynamic profile that actually accounts for how air moves around high-volume rubber rather than treating the rim as an isolated component. Wind tunnel testing means little if it ignores the tire — Roval designed the rim shape specifically around the tires gravel riders actually run.

The rim construction uses Roval's highest-grade carbon layup, the same CLX designation found on their World Tour road wheels. Internal width accommodates tubeless setups without the tire squirm that plagues narrower rims when cornering on loose surfaces, while the hookless bead design simplifies tubeless mounting and allows lower pressures without risking burps. For gravel racing where tire pressure decisions can determine outcomes, that confidence in the rim-tire interface matters as much as any weight savings.

DT Swiss supplies the hub internals through their partnership with Roval, using the proven 180 platform with ceramic bearings and a 36-tooth Ratchet EXP driver. The engagement speed — under five degrees — translates to immediate response when accelerating out of corners or punching over short climbs. Ceramic bearings reduce friction at the hub shell, though their primary advantage at this level is longevity rather than measurable watt savings.... Read More