We categorize our products by their primary use: MTB, CX, Gravel, Road, etc. This just keeps things orderly in the store, but does not mean that you can't use the Gravel line for cyclocross, right? The Cyclocross wheels are tubular. They are a weight optimized, pure cyclocross racing wheel. The Gravel Disc wheels are tubeless, and are distinct from the Road Disc tubeless wheels in that we use a more durable, less weight optimized construction, though the internal width is the same. The Gravel Disc are appropriate for cyclocross use as well, and if you split your riding time between a gravel bike and cyclocross racing, this is the wheel for you, as the hooked bead construction and rated for 135 PSI inflation pressure, so you can run a 25 or 28 road tire at road pressure as well as a cyclocross clincher at low pressure. Similarly, if you are hoping to use the wheels for MTB racing cyclocross, or just cyclocross racing with a tubeless set up, then you want the 28Mx as the wider 24mm internal width and the hookless bead design are superior to the 38G in a cyclocross application, and you can still run up to a 2.3 MTB tire. The hookless bead is only rated for 65# inflation so you can not run a wide gravel tire at 85 PSI on these wheels or you risk blowing off the tire. Our in the field cyclocross experience is that you can run the 28Mx 2 to 4 PSI lower than the 38G and have an equivalent resistance to bottoming out the rim, due to the wider rim and the lower bead.
Below is a table of the approximate build weights of our various models. Note that weights vary from build to build as components have a weight tolerance, and we sometimes use various spoke weights to tune your build, etc.