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The K2 Cortex 140 Zonal BOA® Ski Boots are built for expert skiers who demand maximum power, precision, and control without sacrificing modern fit comfort. With an ultra-stiff 140 flex and a low-volume 96–98mm last, this boot is designed for aggressive, high-speed skiing across all-mountain and freeride terrain.
The fully integrated dual BOA® Zonal system delivers precise, independent adjustment across the lower shell and upper cuff, creating a locked-in fit with even pressure distribution and exceptional heel hold. This results in direct energy transfer, unmatched responsiveness, and total control in demanding conditions.
A rigid TPU shell and cuff provide elite-level support and stability, while the EliteFit Pro liner delivers a performance-driven, heat-moldable fit that adapts to your foot over time. GripWalk® soles improve traction and walking comfort, making transitions off the snow easier without compromising downhill performance.
✔ Dual BOA® Zonal system provides maximum precision and full-shell control
✔ Ultra-stiff 140 flex for elite-level power and responsiveness
✔ Low-volume 96–98mm last for a race-inspired performance fit
✔ EliteFit Pro liner molds for a secure, custom feel
✔ TPU shell and cuff deliver maximum support and stability
✔ Even pressure distribution eliminates pressure points
✔ Exceptional heel hold improves control at high speeds
✔ GripWalk® soles enhance traction and walking comfort
✔ Cam strap increases forward drive and ski response
✔ Built for aggressive skiing in all-mountain and freeride terrain
Category
Elite high-performance alpine ski boots
Collection
Cortex / BOA® Fit System
Skill Level
Expert / elite aggressive skiers
Flex Rating
140 flex for maximum stiffness and power transfer
Last Width
96–98mm low-volume performance fit
Shell Material
TPU shell and cuff for maximum rigidity and support
Liner
EliteFit Pro performance liner (heat-moldable)
Closure System
Dual BOA® Zonal Fit System + elastic cam strap
Sole
GripWalk® (ISO 23223)
Weight
Approx. 2283g (size 26.5)
Fit Type
Low-volume precision race-performance fit
Performance Characteristics
Maximum power transfer, extreme stability, and precise edge control
Terrain Use
All-mountain, freeride, steep terrain, and high-speed skiing
Best For
Expert skiers who want uncompromising stiffness, control, and elite-level performance
