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Charge big lines in the Revolve KF Ski Boot—stiff freeride power with pro-level fit
What Our Gearhead® Experts Are Saying:
"I’ve ridden the Revolve KF and it’s a beast—stiff, responsive, and built to drive freeride skis hard. The Intuition Pro Wrap liner locks in the fit, and the progressive flex makes it feel smooth even when you’re hitting drops or charging fast lines."
When the mountain is your playground, you need a boot that matches your ambition. The K2 Revolve KF Ski Boot—designed with pro rider Karl Fostvedt—delivers freeride-ready performance with one of the stiffest FL3X builds to date. With a 130 flex and a precise 99mm last, this boot is built for skiers who demand control, responsiveness, and stability at top speed.
Every detail is engineered for freeride power. The Revolve Plus shell and TPU construction provide the strength to drive big skis, while the Intuition Pro Wrap liner offers a fully heat-moldable, locked-in fit for maximum energy transfer. An elastic cam strap adds extra responsiveness, and GripWalk outsoles make hiking lines or scrambling on rocks safer and easier. Whether it’s pillows, spines, or big mountain lines, this boot is tuned for those who send it from dawn to dusk.
Details
- Pro-level freeride boot designed with Karl Fostvedt
- 130 flex delivers stiff, powerful performance for aggressive skiing
- 99mm last provides a snug, performance-oriented fit
- Intuition Pro Wrap liner offers heat-moldable, locked-in comfort
- Revolve Plus shell with TPU cuff and shell for durability and response
- Elastic cam strap boosts energy transfer and control
- GripWalk outsoles improve traction on bootpacks and icy terrain
- Weighs 2065g per boot (26.5 size)
- Item #K2SO12L
- Shell Material
- TPU
- Flex
- 130
- Last Width
- 99mm
- Buckles
- 3
- Buckle Material
- aluminum
- Walk Mode
- none
- Liner
- Intuition Pro Wrap
- Thermo-moldable Liner
- yes
- Activity
- all-mountain skiing, freeride skiing, powder skiing
- Liner Closure
- power strap
- Manufacturer Warranty
- 1 year
- Binding Compatibility
- GripWalk (ISO 23223)
- Sole
- GripWalk

Free & Original Since 1962
K2 is the original American Ski and Snowboard Brand, founded in 1962 in Washington State.