The K2 Recon X 130 BOA Ski Boots bring a powerful 130 flex and precision BOA fit to advanced skiers who like to drive their skis hard across the mountain. The BOA Fit System replaces traditional lower buckles with a micro-adjustable dial and cable system that wraps the shell evenly around the foot, while K2’s 97–100mm Mid Volume MultiFit Last accommodates a range of foot shapes without giving up a secure, performance-oriented fit. A durable TPU shell delivers smooth, progressive power through each turn, while the lightweight PP cuff and 40mm power strap provide plenty of support when speeds pick up. Both the shell and cuff are fully heat moldable, and the softer FastFit Instep makes getting in and out noticeably easier. Finished with heat-moldable P4 liners and preinstalled GripWalk soles, the Recon X 130 BOA is a stiff, responsive all-mountain ski boot for skiers who want to buckle in, crank it up, and charge.

Key Specifications

Flex 130

Last 97–100mm MultiFit

Ability Advanced

Closure BOA® Fit System

Shell TPU

Sole GripWalk

BOA® Fit System

The BOA® Fit System delivers dialed-in performance and a micro-adjustable precision fit engineered to perform in demanding conditions. The system combines a micro-adjustable dial, lightweight yet extremely strong laces, and low-friction lace guides in a configuration designed to improve the fit and performance of the boot.

Mid Volume MultiFit Last

The MultiFit Last was developed alongside the BOA® Fit System to accommodate a variety of foot shapes while maintaining a secure fit. The Mid Volume MultiFit Last is designed for boot widths from 97–100mm.

TPU Shell

TPU delivers a smooth, progressive flex with excellent durability and dependable performance across a broad range of temperatures. Its balanced feel provides predictable power transfer and strong edge control for skiers who value precision without sacrificing comfort.

PP Cuff

Lightweight and durable polypropylene construction provides consistent flex and reliable support in varying conditions while helping keep unnecessary weight out of the boot.

Fully Heat-Moldable

Both the boot's shell and cuff are capable of being heat-molded to accommodate a variety of foot shapes for a more customized fit.

FastFit Instep

Softer TPU material in the instep area makes entry and exit quicker and easier, reducing the struggle of getting into and out of a stiff performance ski boot.

P4 Liner

The heat-moldable P4 liner combines a PVC outer material, PE mid foam, and an open-cell inner for soft cushioning. A supportive 10mm PE tongue adds structure without unnecessary bulk.

40mm Velcro Strap

A versatile 40mm VELCRO® power strap provides additional cuff closure and support while balancing easy adjustment with responsive performance.

GripWalk Outsoles

Preinstalled removable and interchangeable ISO 23223 GripWalk soles feature a rockered profile designed to provide better grip and added comfort while walking and standing in ski boots while maintaining proper power transmission and release performance with compatible bindings.

Boot Specifications

Ability	Advanced
Flex	130
Last	Mid Volume MultiFit — 97–100mm
Closure	BOA® Fit System
Shell	TPU
Cuff	Polypropylene (PP)
Liner	P4 — Heat Moldable
Power Strap	40mm VELCRO® Strap
Heat Moldable	Shell & Cuff
Instep	FastFit Instep
Outsole	Preinstalled GripWalk — ISO 23223

Ski Boot Size Chart

Mondo	25.5	26.5	27.5	28.5	29.5
Shell Length	294 mm	304 mm	314 mm	324 mm	334 mm
US Men's	7.5	8.5	9.5	10.5	11.5
US Women's	8.5	9.5	10.5	—	—
EU	40	41.5	42.5	44	45.5
UK	6.5	7.5	8.5	9.5	10.5