K2

Cortex 140 Zonal BOA Ski Boot - 2026

What Our Gearhead® Experts Are Saying:

"I’ve never felt a boot dial in this precisely until I tried the Cortex 140 Zonal BOA. The dual BOA dials let you micro-adjust fit separately in the cuff and lower shell, which means no hot spots and unreal control. It feels as powerful as a race boot but is comfortable enough for long resort days. If you want serious performance, this is the one."

Engineered for skiers who demand uncompromising power and control, the K2 Cortex 140 Zonal BOA Ski Boot sets a new benchmark in precision fit and performance. Two independent BOA dials let you fine-tune the lower shell and upper cuff independently, locking your foot in place with a level of micro-adjustment traditional buckles can’t match. The result is a boot that feels like an extension of your leg—responsive, supportive, and ready to charge.

A 140 flex delivers race-inspired power transfer, while the EliteFit Pro liner keeps your foot comfortable from first chair to final lap. The GripWalk outsole improves traction off the snow, and the elastic cam strap provides a secure, uniform closure across the shin. Whether you’re pushing limits on groomers, dropping big lines, or laying trenches on steep pitches, the Cortex 140 Zonal BOA makes no compromises.