Roval CLX 32 - Front

When we set out to create a lightweight wheelset we didn’t want it to be “just another climbing wheel." We wanted to provide the lightest wheelset out there with the aerodynamic attributes of something twice its depth. One wheel that'll get you to the base of a climb quickly and up it as efficiently as possible yet still be strong enough for day-to-day abuse. It was a tall order but in the end the CLX 32 gave us more than what we asked for.

Our design process started with a low overall weight at the forefront as we knew what weight we could hit with the information and technology we had available. With that weight in mind we then turned our focus to aerodynamics and began an iterative process of designing and testing over 150 individual rims to find the optimal shape. These innumerable Computational Fluid Dynamics (CFD) models Win Tunnel hours and shots of espresso left us with a 32mm-deep shape that boasts more logged wind tunnel time than any other wheel in its category.

Once we found the most aerodynamic shape at the 32-millimter depth we came back to the weight focus and proceeded to experiment with over 40 different layup methods to reach our desired weight. And this made the CLX 32 lighter and faster than every other competitor in the lightweight wheel category.

For the CLX 32 clincher front we mated the rim to our Aero Flange (AF) series hub with DT Swiss Aero spokes in order to create the best overall wheel system. This resulted in a 553-gram 21mm-wide (internal width) front wheel with an extremely low inertia value. In cycling inertia relates to the amount of force it takes to accelerate or decelerate so wheels that are built with lightweight rims like the CLX 32 result in a lower inertia value that creates a lively wheel that allows you to accelerate decelerate and change direction with less effort. But why so wide? Well additional width does three primary things for a rim—it provides additional structural strength it allows for a clean rim and tire interface when using wide tires (resulting in enhanced aerodynamics and faster rolling properties) and it better supports the tire in hard cornering. This boosts both predictable grip and confidence when things get twisty on the descents.

Each CLX 32 clincher front wheel also employs the legendary CeramicSpeed bearings and comes with our padded wheelbag quick-release tubeless plugs tubeless valve and SwissStop Black Prince brake pads.