2026 Fischer RC4 120 LV BOA Ski Boots

The Fischer RC4 120 LV BOA is a high-performance boot for skiers with narrow, low-volume feet who want a precise fit without painful pressure points. A BOA dial on the lower shell wraps the foot evenly, while a moldable Vacuum shell and a heat-moldable liner let a bootfitter fine-tune the fit. Strong intermediate and advanced skiers get a snug, connected boot with a performance flex that stays comfortable from morning to last call.

Why we like it:

Narrow feet usually get stuck choosing between a race boot and a sloppy fit, and the reworked LV last solves that by giving slim feet a close hold with real all-day comfort. The BOA H+i1 dial adds to it, closing the lower shell evenly so you aren't cranking buckles to take up extra volume.

Who it's for:

Intermediate and advanced skiers with low-volume feet who ski the whole mountain and want a precise, responsive boot. It's a natural fit for skiers with a slim heel, a narrow forefoot, and a lower instep who have struggled to get a secure hold in average-width boots.

Highlights:

Fischer reworked the last on this boot specifically for narrow feet, using Scan-Fit data built from hundreds of thousands of foot scans to shape a close, anatomical fit through the heel and forefoot. The BOA H+i1 Fit System closes the lower shell with a single dial, pulling the shell around the foot for even pressure and on-the-fly adjustment, and its releasable cartridge and bayonet design are made to survive impacts. Two cuff buckles and a 45mm Velcro strap secure the upper. The Vacuum shell can be heat molded by a bootfitter, which is a big advantage for narrow feet with bony spots, and the RC4 Vacuum Fit +Plus liner is also thermoformable, with a D3O insert in the tongue that softens impacts and firms up under load. RD20 Race Canting allows cuff alignment tuning, the bootboard is grindable, GripWalk soles make walking easier, while SOMA-TEC geometry positions the feet in a relaxed, slightly abducted stance.

Things to consider:

The 98mm last is snug by design, so skiers with average or wide feet will be much happier in the MV version. This boot runs a 45mm Velcro strap rather than the 50mm cam strap found on the RC4 130 LV BOA, and GripWalk soles need a GripWalk or multi-norm compatible binding.

Fit & sizing considerations:

Fischer lists the RC4 120 LV BOA at a 98mm last, which puts it in low-volume territory. As a 120-flex performance boot with a moldable shell and liner, it's worth booking a fitting session with an experienced bootfitter to get the most from it.