Sometimes, when two things are combined, they produce something far greater than the original constituents. History is marked by such fusions: fire and meat, iron and carbon into steel, ski poles and ice axes, J-Lo and Shakira. Now, two of the best options for backcountry boots have joined forces to form the all-new, all-powerful F1 LT. By combining lightweight race features from the immensely popular Alien RS with the time-tested durable and reliable F1, SCARPA has created a boot that will change the game for years to come. While some boots may walk the line between race boot and touring boot, the F1 LT is the line. Built for long and fast tours as well as deep, technical descents, this is the boot for skiers who want to chase the most ambitious of objectives while spitting at the notion that skiability and weight are trade-offs.
The lower of the F1 LT was inspired by the Alien RS: made with a Carbon Grilamid LFT shell that is built with the same 3D Lambda Torsion Frame used by the RS to provide more direct power from your foot to the ski, the lower is secured by a simple Boa dial that cinches the waterproof gaiter across the top of your foot providing a quick, dry, and secure fit. Strategic cutouts on the exterior eliminate excess weight and material wherever possible while maintaining enough structural rigidity to drive high-fat skis with ease and confidence. The cuff (also made of the same Carbon Grilamid LFT) trades out the cord-closure of the RS for an F1 buckle strap to increase power and reliability and an additional removable powerstrap (+30g) for even more control on the descent. The spring-loaded ski-walk mechanism is easy to flip and provides an incredible amount of low-friction articulation that will make sure these boots are the last thing to hold you back when speeding uphill. The F1 LT is the boot that will make freeride skiers want to race and make racers want to freeride. Plus, a sexy orange-black paint job will give your ski partners something to look at as you fly past them in your new SCARPA F1 LT's.
- The prodigal child of two of SCARPA's most popular boots, the F1 LT sets the bar for other hybrid race/touring boots.
- Ankles rejoice! 72° degrees of motion is a 10° improvement over the F1 and is more akin to that of race boots.
- Carbon Grilamid LFT construction ensures the highest possible power-to-weight ratio.
- 3D Lambda Torsion Frame increases direct power transmission from foot to ski.
- Boa-secured waterproof gaiter will keep your feet cozy and dry.
- Dynafit Quick Insert tech fittings make stepping in a breeze.
- A surprisingly powerful race boot, or an impressively light touring daily driver, this boot can and will do it all.
- Forward lean can be adjusted by moving the ski/walk lever mounting position, with choices of 9°, 11°, or 13°.
- Removable rigid spoiler on the back of the liner is attached with Velcro so you can further tweak the forward lean (+/- 2°).
- Included power strap (+30 grams) pops on and off in a snap.
|Weight (pair)||1990g 
||Velcro strap + BOA|
||9°, 11°, 13° (+/- 2°)|
||Carbon Grilamid LFT|
||Intuition Cross Fit Tour LT|
||Vibram UFO RS|
|Skimo Co Says|
|Usage||Light and fast touring with confident downhill performance|
|Notes||Removable Velcro spoiler on the liner tweaks the Forward lean|
|Bottom Line||A light-as-possible touring boot that boasts the skiability of heavier boots|
|Compare to other Touring Boots|
Questions & Reviews
We typically judge sizing based on an actual foot measurement. Hence, for any fit-related questions, reach out to us at email@example.com or fill out a Boot Fitter and we can get you some advice!
Of course it walks well, no surprise there. Great ROM, easy stride, light weight, climbs great! I know some folks feel like the upper power strap/cam lever mechanism doesn't have enough throw for smooth walking without additionally loosening it. I didn't find this to be the case at all. I set it to a comfortable pressure for the down, and then opened it, and had plenty of ROM. That said, I have less ankle ROM than others.
I found transitions were fast and smooth, once I figured out the correct pressure from the calf strap. I ended up removing the upper velcro strap, it didn't do anything for me.
I skied much bigger skis than Scarpa recommends for this boot, including a 10K+ day in variable snow on a 184 cm, 112 mm wide ski. No, I wouldn't ski big skis and jump off stuff regularly in this boot, but with some finesse it drives bigger skis just fine.
Ultimately, my high volume, super tall foot meant that I just couldn't stay comfortable in this boot for bigger days, but my foot is a big outlier, and doesn't fit well in most boots, so if you're closer to the center of the bell curve, you'll probably be well served!
While it probably wasn't its intended usage, I don't think this boot struggled to drive a 1550g ski (98mm 172cm length on size 25.0). Wearing them felt super light, so I really noticed the energy expenditure saved on long and sloggy bootpacks.
Some cons are that it's a little cramped in the toe box (for me), and that the boa enclosure wraps over the forefoot (I would rather like it to clamp the ankle). A commenter asked a question about the boot rubbing the inner ankle bone and that was definitely the case for my left one, but it became less of an issue with more usage. The transitions are quick, but I do notice myself having to readjust the top strap (not the power buckle).
All in all, I could probably have found a better fitting boot, but I've been happy with how they have skied and performed. I'd be curious to finally drive it on lighter skis like the Blizzard Zero G's next season and see how durability continues to hold up.
I own the original Scarpa Alien 27.0, that fit perfect. I also have the Scarpa RS 27.0 that are almost too tight.
What size would you suggest ? Trying the 28? Aid the fit wider then the RS?
I have very low volume feet, ankles and legs, with moderate width forefoot and skinny ankle. I found the forefoot too tight and too short, constricting my toes. I initially couldn't get the boa tight enough over my forefoot but I solved that by adding a thicker foot bed. The ankles were too roomy, which wasn't a big deal on the uphill because I was able to secure my foot with the boa, but they moved around a bit on the downhill which made skiing a little harder. Like any boot without a tongue, the flex is not very progressive and can be a bit unforgiving in bad snow.
In the end I got rid of my F1 LTs and just use the Skorpius now which fit my feet better, and have a much more progressive flex. They do walk a little worse and are a little heavier.
Thinking of ordering some F1 LTs for this year's PdG and just wondering whether to size up to a 300 or stick with 290. My foot is c.270 long.
If you'd like more detailed help dialing in your boot size, please feel free to fill out our online boot fitter.
I havent had much boot work done, and I would give these 7/10 comfort wise so for.
All and all its great boot for weight, but I wish they were a little more versatile.
For the most part, ski boots have a proportional shell. So, as you mentioned with the Travers, the F1 LT gets proportionally wider as compared with the reference size. However, I would still consider the F1 LT to have a pretty low volume fit. If your feet are on the wider end of the spectrum, this boot would not be my first choice for you. If you would like some additional help picking out a set of boots, I would recommend filling out a boot fitter!
Considering using these as a training and race boot (for longer grande-course style races) as well as light-weight touring. Is there a particular after-market liner that you would recommend for a lighter race setup while keeping the stock intuition liner for regular touring?
The Scarpa F1 LT is not compatible with a shift binding. Officially, Scarpa states that driving a ski wider than 85mm underfoot with the F1 LT will void the warranty.
However, the F1 LT is impressively powerful for its weight, and plenty of folks have driven skis in excess of 85mm using that boot. If you plan to drive wide powder skis with your F1 LTs, less demanding conditions like soft powder will probably be fine. If you find yourself charging on hardpack and variable snow with a 100+mm ski, you will feel under-powered. For further questions on your deep snow quiver slot, feel free to reach out to firstname.lastname@example.org!
Maybe I just need to wrench those suckers down or take a knife to ‘em?
Officially, Scarpa states that driving a ski wider than 85mm will void the warranty on the F1 LT. However, plenty of folks have driven wider skis with great success.
It sounds like you are looking to pair these boots with a pretty beefy ski. I would think you could probably get away with it in softer snow. However, If you are skiing fast on hardpack or variable snow, you will probably want more boot than the F1 LT can provide. For further questions, feel free to reach out to email@example.com!
Very exciting boot but still wondering how far can we push it.
What are your thoughts of these boots on "heavy" bc skis as Corvus Freebird?
I absolutely want to try it out but I don't really know what to expect in a downhill performance...
Is this a great boot? Yeah, it is. But to me it fell in a weird place. Not light enough to justify its lack of power, not powerful enough to justify the weight.
For a weight savings, you can get the extremely similar Alien RS. For performance, you can pick any of the 1200g boots.
Enjoyed my time in them, well designed and comfortable and capable, but at the end of the day they're still a skimo boot, don't expect to be blasting breakable crust in them.
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