Kastle K110P

Model Year
2024-2025
Category
All-Mountain Traditional
Last Width
100
Flex Index
110
Price (MSRP)
$749.00USD

When expert skiers start whining about how stiff a boot flexes and how tough it is to get on, it pays to look a little lower in the model line for the kinder, gentler version of that beast. That's what testers say the Kastle K110P is, a nice beast of a boot, like a pet grizzly or trained rattlesnake. So cute! The K110P is not a 110, testers say, but rather it skis closer to a 120- or even a de-tuned 130-flex. They thought it skied right alongside the best boots in the most competitive category in the whole boot test. And yet, they said it went on and off more like a 110-flex, and had an even-wrapping closure in the lower boot on account of the slightly softer polyurethane construction.

So, it lied about it's flex index. That's okay. But it also lied about its last width, just a little bit, a white lie. Testers say it's damn snug for a medium-width 100mm. Call it a 99mm and it would be more accurately advertised, they said. Did this bother them? Not one bit, but it may have resulted in some demerits in their scoring for missing the fit tension target--our testers are tough graders, ya know. Did they love the fit that it offered? Yes, they did. It was super snug in the instep, heel and ankle with a little more room to spread out into the forefoot before tapering a bit, in old-school-toebox fashion, to squeeze the sides of the big and little piggies a bit more than desired.

They loved the performance result of this stiffer and more-snug-than-billed boot. It ripped, they said. Everywhere. It skied better than they expected and as well as boots that cost 200-bucks more. They said it was intuitively quick and smooth to roll onto edge. It had a strong but damp and predictable torque curve and it handled mixed terrain with aplomb. Testers said the stance was just bullseye-perfect and seemed to aid skiers in making athletic moves and generating steep edge angles. They had no complaints about how it skied, with the exception of one tester who said the flex collapsed more than the other 130-flex boots in the group. Well, duh. It's a strong 110-flex but a 110-flex nonetheless.

This is a good boot for technical skiers more interested in performance than fluffy features. It would suit the lighter weight ripper or a skilled skier with a softer touch to the front of the boot. It was Kastle's best boot of the test, according to one veteran tester, who also said that the boot's biggest flaw would be its likely lack of presence at retail and suggested that prospective buyers who fit the bill should get on their new boot search program sooner than later for this one.

Gender 
Men's
Sizes (MP) 
24.0-30.5
Hike Mode 
No
Construction 
Overlap
Boot width profile 
Medium
Also in this Collection 
130
Cantology Compatible 
No
Total Avg Score 
4.32
Shell/Cuff/Tongue Plastic 
PU/PU
Anatomical Fit and Initial Feel 
4.25
Dynamic Balance 
4.42
Edge Power & Fore-Aft Support 
4.25
Quickness, Steering & Feel 
4.58
Convenience, Warmth & Features 
4.08
Tech Compatible 
No

Kudos

  • “The lower boot's lateral column is nice and wide. It's a cool looking boot. Fore-aft and lateral home base is easy to figure out--great, balanced stance. Nice, well-balanced boot that's quick and strong for a 110-flex. Fun and pleasant to ski.” -- Pat Sullivan
  • “Good room in the forefoot and toebox with a snug heel and ankle fit. Has a nice-feeling roll onto the edge. ” -- Charlie Bradley
  • “Top performing yet smoothly comfortable fit, and it stacks the body in a comfortable, athletic position. The flex is strong enough to power the ski effectively through any snow condition but at the same time, the flex is soft enough to enhance forgiveness. On par within a competitive category.” -- Bob Gleason
  • “very good performance angles balance wise. Surprising trenching power on the hard, rattly, morning snow. A lot of horsepower for a 110-flex, felt stiffer than that on the snow. Balanced and intuitive.” -- Jim Schaffner
  • “This is an impressive fit, comfortably snug with only a few exceptions. No hot spots and mostly medium-feeling--pretty goddamn good. The toebox shape is kinda old school and rounded--tapers a little tight for the big toe and the little piggy so a little bit of grinding will probably be necessary. Some fit quibbles would be an okay trade for how well this boot skis--way stronger than a 110 flex index would indicate. This is the best Kastle I've tested yet and probably their best boot--goes everywhere, does everything, snug but comfortable.” -- Mark Elling

Caveats

  • “Navicular is very tight.” -- Pat Sullivan
  • “Felt lower-volume than a 100mm last.” -- Jim Schaffner
  • “A little too snug for the medium-width target at the instep, heel and ankle.” -- Mark Elling

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