K2 FL3X Revolve KF Ski Boots 2026
Model Info
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K2 FL3X Revolve KF Ski Boots 2026
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Product Info
The K2 FL3X Revolve KF Ski Boots are the launch pad for Karl Fostvedt’s signature send—it’s full throttle or nothing. With an updated even beefier flex of 130, and a comfy Intuition Pro Wrap liner, they’re built to handle high-speed pillow drops, sketchy landings, and rowdy side hits like it’s just another day at the office. If your idea of fun is turning natural features into a playground and going all out, these boots are your ride-or-die.
Product Details
Fit
Last: 99mm – A slightly narrower than average fit for most feet.
Flex
Flex: 130 – A very stiff flex for advanced to expert skiers.
Liner
Intuition Pro Wrap Liner – Slip into the Intuition Pro Wrap, and experience unmatched ankle retention and pressure-free performance. Crafted out of Intuition® Foam, the Intuition Pro Wrap offers the added comfort and performance your boot is missing.
Shell Materials & Design
Shell – TPU (Thermoplastic Urethane)
Cuff – TPU (Thermoplastic Urethane)
Revolve Plus Shell – The Revolve Plus Shell takes the same 99mm last and opens up the toe box for a roomier feel out of the box. The Pillar Shell uses the original 3-piece design and adds replaceable soles for extended longevity and increased traction.
Fully Heat Moldable – Both the boot's shell and cuff are capable of being heat molded to a variety of foot shapes for a truly custom fit.
Buckles
3 Revolve Alloy
Power Strap
Elastic Cam Strap - One Piece – Increases performance and responsiveness by cinching tighter than a traditional power strap resulting in exceptional power transmission and precise handling.
Sole
GripWalk ISO 23223 Outsoles – Removable and interchangeable rockered soles designed to work with GripWalk binding systems for better grip and comfort while walking, standing, and hiking.
Specs
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Ability Level:
Advanced-Expert
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Ability Level
Advanced-Expert Whether you charge the steepest lines, hit the biggest jumps in the park or carve with race-like precision, advanced to expert level skis, snowboards, boots and bindings are for the more aggressive rider. In skis and snowboards, you'll often find layers of metal, carbon or other stringers for rigidity and power, while advanced to expert level boots and bindings are usually on the stiffer side of the spectrum for rebound and precision steering.
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Ski Boot Flex:
Very Stiff
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Forefoot Width:
99 mm
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Forefoot Width
99 mm Forefoot width, or last, is the reference width for this model based off shell size 26/26.5. Larger or smaller shell sizes will diverge from this reference width in increments of 2mm for every full size. - Liner Type: Semi-Custom
- Flex Index: 130
- Boot Sole Type: GripWalk (ISO 23223)
- Includes Tech Fittings: No
- BOA®: No
- Number of Buckles: 3
- Athletes: Karl Fostvedt
- Series: FL3X
- Warranty: 1 Year
| Size | 24.5 | 25.5 | 26.5 | 27.5 | 28.5 | 29.5 | 30.5 |
| Indiv. Boot Weight (g) | 2065 |