K2 BFC RX BOA Ski Boots

Designed for intermediate to advanced skiers looking to combine everyday comfort with performance across the entire ski area, the K2 BFC RX BOA meets a specific need: to offer easy on/off, reliable support, and adaptability to a wide variety of foot shapes. Designed for full days of all-mountain skiing, they combine modern lacing technologies with a thermoformable construction for a customizable fit from the very first time you put them on. This model is for those who don’t want to sacrifice comfort for performance—or vice versa.

A versatile fit suitable for a wide range of feet

The MultiFit™ Last, developed with a metatarsal width ranging from 100 to 103 mm, is one of the K2 BFC RX BOA’s standout features. This medium-to-slightly-wide profile accommodates a variety of foot shapes without creating pressure points, resulting in significantly improved comfort during long sessions. Both the shell and the cuff are thermoformable, allowing for custom boot fitting to further refine the fit around the foot. The CushFit Plus liner, made from a blend of open-cell foam and EVA, helps absorb shocks and provide thermal insulation on cold days.

A 100 flex rating calibrated for progression and on-piste performance

With a flex rating of 100, the K2 BFC RX BOA ski boots fall into the intermediate to advanced range. This level of stiffness offers enough responsiveness to initiate turns with precision on groomed runs, while maintaining flexibility that doesn’t compromise comfort at the end of the day. The thermoplastic polyurethane (TPU) shell and polypropylene cuff ensure power transfer consistent with this performance profile, without excessive stiffness that would discourage skiers looking to improve their skills.

BOA lacing and closures for a micro-adjustable fit

The closure system on the K2 BFC RX BOA is based on a combination designed for precision and practicality. Here are its main components:

• BOA® Fit System on the lower part of the shell: allows for micro-adjustment of tension to ensure even pressure distribution and reduce pressure points.
• 2 lightweight alloy buckles on the top: ensure the collar stays secure and transfers force to the ski.
• 40 mm Velcro strap: reinforces ankle support without stiffening the entire structure.
• Hands-free entry: makes it easier to put on and take off the boot, which is especially appreciated at the end of the day or during frequent changes.

GripWalk sole and walk mode for off-piste life

The outsole meets the GripWalk ISO 23223 standard. Its convex shape and ribbed rubber tread improve traction on packed snow and ice when walking, where a standard alpine sole can be slippery. This outsole is compatible with GripWalk bindings. Après Mode 2.0, with a 50° range of motion, releases the cuff to make it easier to walk between the lifts or around the resort’s amenities without having to take off your boots.

With its 100 flex, roomy MultiFit™ last, and thermoformable construction, the K2 BFC RX BOA is a solid choice for intermediate to advanced skiers who enjoy all-mountain skiing and value quick lacing, a precise fit, and sustained comfort throughout the day. Weighing 1,950 g for a size 26.5, it falls within the standard range for a versatile ski boot designed for comfort and performance.