Test Report
From looking at it and touching it, I was actually expecting a very light freetouring ski, as is now available from many manufacturers, but here I can already anticipate that the impression is deceptive and the Crux 105 Pro is much more stable downhill than its weight would suggest. But first things first ...
Ascent
The low weight of the ski is of course a positive factor on the ascent. The ski is so light that you actually ask yourself why you really need even narrower skis. Sure, lighter is always possible, but when I think how heavy normal touring skis with 90 mm in the centre were 10 years ago, you really can't say anything more here.
The binding also works wonderfully. It is unusual that you can only turn it in one direction to set it to ascent mode and turn it back in the opposite direction to be able to ski down again. However, this is of course not a problem, and the stoppers locks very well and also fold in well sideways, so nothing gets stuck in the snow on the ascent. The binding and climbing aids are easy to operate and can also be adjusted with ski poles.
Descent
What is more exciting, especially with lightweight skis and bindings, is the behaviour on the descent. And this is where the Crux 105 Pro scores particularly well. I can't say whether this is due to the elaborate construction. However, the ski is really incredibly stable on the descent for its low weight. Of course, this is particularly noticeable in hard or variable snow, but even in softer conditions you can make really good big turns down the slope. The ski is also very stable on piste and fun to ride for a touring ski, and also impresses with good grip. Of course, the low weight of the ski compared to a typical freeride ski is noticeable. However, it is still extremely stable, regardless of whether you stand on the edge or let the ski run in any other way. The flotation in soft snow is, as you would expect from a ski of this width, good and therefore probably sufficient for everything except really deep and soft powder. In good snow, the ski behaves similarly to the competition, but in my opinion it is also more stable in terms of speed than the comparable skis I know. In hard snow, however, it clearly stands out positively and beats many, even narrower, touring skis by far.
Of course, the Crux 105 Pro is a rather wide freetouring ski whose focus is certainly on descents in softer snow. However, due to its high stability, I would use it as an all-round touring ski without any concerns.