Aero gravel is a category that didn't exist five years ago, and the Roval Terra Aero CL is one of the wheels that defines what it means now. Built around a 40mm-deep, hookless carbon rim with a 25mm internal width, the front wheel is engineered to cheat the wind on long gravel days without giving up the tire volume or compliance that rough surfaces demand. It's the front half of the wheelset Specialized specs on the Crux DSW and aero-focused Diverge builds, sold here as a single front wheel for replacement or custom pairings.

The 40mm depth is the headline number, and it's chosen deliberately. Deeper than a traditional all-road rim but shallow enough to stay manageable in gravel crosswinds, the profile is shaped to work with the 40-50mm tires that most modern gravel riders are running. Roval develops these shapes in the same wind tunnel program that produces the Rapide and Alpinist road wheels, and the Terra Aero CL borrows that aerodynamic vocabulary while accepting the wider tires and lower pressures the discipline requires. The 25mm internal width supports tubeless tires up to 2.1 inches and gives mounted rubber a rounded, supported profile that resists burping under hard cornering loads.

Hookless construction is the standard here, which means tubeless setup with compatible tires only — no tubed clincher fallback with hooked-bead tires, and pressure ceilings dictated by ETRTO hookless guidelines. For most gravel riders running 40-50mm tubeless tires at 30-45 psi, this is a non-issue and the way the wheel was designed to be used.... Read More