I bought these boots with the intention to use them as a daily driver and for some longer technical ski traverses. I chose them to fill in the gaps I saw where my Alien 1.0 are a bit week. I wanted something that, like the Alien 1.0, was 1) light weight, 2) full range of motion, and 3) stiff but that also 4) was full coverage, and 5) had a locking mechanism that was less prone to breakage / could easily be repaired in the field. No doubt that the Syborg is light, stiff, and has a full range of motion (and at a great price!) - criteria 1-3 check! On full coverage: I have found that the vinyl outer on the front and the additional insert for the back to be sufficient. The front has proved surprisingly durable and has provided no problems. The back inserts however are flimsy and poorly attached to the boot. Once these back inserts see a bit of wear they easily bent out of shape and sometimes come out of place. when putting the boot liner in the shell. As long as I am concious of the issue it's fine. So criteria 4 is met... but not with flying colors. Criteria 5 is where things get tricky. On first inspection and use the locking mechanism is smooth as can be, but there are some issues. First, the locking lever gets in the way of most automatic crampons. You can adjust the tension on the locking lever to make space for a normal automatic crampon heel lock - but this is completely impractical in the field. I have gotten around this by using a pair of CAMP race 290's which utilize a TLT specific design or by using a pair of crampons with Petzl's sidelock mechanism - neither of which get in the way of the boot's locking mechanism. This is something potential buyers must be aware of - without the right crampons this boot can become significantly less useful (at least in my mind). This is especially relevant as I consider one of the boots greatest strengths is how well it climbs. I have lead WI4 in these boots without any problems (much better climbing boot than the Alien 1.0). Howerver the real issue with the locking mechanism that it can potentially be pushed upwards, triggering a safety release, when walking in deep snow (especially walking downhill). Resetting the spring back into place is a major pain in the ass (even if you're sitting at home in your living room). I've only had this issue on two occasions but it was enough to bend the spring that tensions the locking mechanism so that even once the spring was reset there was not enough tension for the boot to lock into ski mode. Luckily I was sitting by a car and could take the time to sit down and get at the spring with a leatherman and bend it back into shape to provide just enough tension to lock the boots into ski mode. I would expect a more durable and robust build for such a crucial part on the boot - which in the end has proved quite flimsy. The Syborgs are a great everyday touring ski that super comfy (great liner that dries super quick) and ski great. I detract one star from my rating because of the specific technical details with the locking mechanism and the flimsy nature of the rear snow guard inserts. Overall I am quite satisfied with these boots.That being said, I prefer the alien 1.0 without question when it comes to racing and training. I often tell people that I think of the alien 1.0 as a running shoe, the syborg as an approach shoe, and the the tlt6 as a light boot.
Hi Randolph, thanks for the detailed feedback. FYI there is a fix for the lever spring issue. Sportiva is sending out new lock levers that have a pin to prevent the upwards movement that releases the spring. I can send you a set when they arrive.
You are really are the best internet retailer I've ever dealt with (by a mile - even 10 miles!)!
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