The K2 CORTEX 140 ZONAL BOA® is the result of the perfect combination of a racing boot and a freeride model. Developed for expert skiers, it offers exceptional power, precise control, and unparalleled freedom of movement. It is the most high-performance boot ever designed by K2, tested and approved in freeride competitions at the highest level.

Featuring a flex rating of 140 and a 2-piece shell, it combines performance and comfort thanks to its BOA® Zonal system, which allows for a consistent and precise fit. Every descent becomes a demonstration of power, fluidity, and responsiveness, whether on groomed slopes, big mountains, or in powder snow.

Key features

• Flex 140: stiffness and power suited to expert skiers.
• BOA® Fit Zonal system: quick, precise and personalized adjustment.
• EliteFit Pro liner: comfort, support, and performance over time.
• Elastic Cam One Piece strap: firm and progressive support.
• 96–98 mm metatarsal width: narrow anatomical fit for optimal control.
• All-terrain versatility: suitable for freeriding, big mountain, powder, and speed.

Technical specifications

• Level: Expert
• Category: All-Mountain – 2-piece shell
• Closure system: BOA® Fit System with zonal adjustment
• Liner: EliteFit Pro
• Strap: Elastic Cam Strap – One Piece
• Metatarsal width: 96 mm / 98 mm
• Collection: Cortex • BOA®
• Gender: Men & Women (Unisex)
• Recommended use: Freeride, Big Mountain, Powder, Speed

Performance on snow

With its firm support and precise fit, the CORTEX 140 ZONAL BOA® guarantees stability and responsiveness at high speeds. Its zonal lacing eliminates pressure points to maintain optimal comfort during landings and technical passages. It is the ultimate weapon for those who want to push their limits in all conditions.

Comfort & fit

• Customized support thanks to the BOA® Fit System Zonal.
• EliteFit Pro liner designed for a balance between performance and comfort.
• Elastic strap that follows the natural flex of the leg for better energy return.

Who is it for?

Experienced and expert skiers looking for power, precision, and stability. Its narrow fit (96–98 mm) is designed for those who prioritize performance and responsiveness, even in the most demanding terrain.