2026 Fischer RC4 120 MV BOA Ski Boots

The Fischer RC4 120 MV BOA is a great option for skiers with medium-volume feet who want a snug, high-performance fit that's comfortable all day. A BOA dial on the lower shell wraps the foot evenly, and both the Vacuum shell and liner can be heat molded for a truly custom feel. Strong intermediate and advanced skiers get a precise, responsive boot that rewards good technique without punishing their feet.

Why we like it:

The BOA H+i1 dial is the star here. One twist wraps the lower shell evenly around the foot, and you can fine-tune the tension on the chairlift without fighting a buckle. We also like the D3O insert in the liner tongue, which stays soft against the shin but firms up under load for a more connected flex.

Who it's for:

Intermediate and advanced skiers who spend their days on groomers and mixed all-mountain terrain and want a boot that rewards good technique. It's built around a medium-volume foot with an average forefoot and instep, and the BOA wrap is a real help for skiers whose feet have been hard to dial in with traditional buckles.

Highlights:

Fischer's Vacuum process lets a bootfitter heat and mold the shell itself, so pressure points can be fixed without grinding or punching. Inside, the RC4 Vacuum Fit +Plus liner is also thermoformable, and its D3O powered tongue absorbs shock and smooths out power transfer. The lower shell closes with the BOA H+i1 Fit System, a high-power dial built for alpine boots, and its releasable cartridge and bayonet system is designed to survive impacts. Two cuff buckles and a 45mm Velcro strap handle the upper. The last comes from Fischer's Scan-Fit data, built from hundreds of thousands of foot scans, and SOMA-TEC geometry sets you in a slightly V-shaped stance that feels natural and is easier on the knees. RD20 Race Canting allows cuff alignment tuning, the bootboard is grindable, and GripWalk soles make the walk to the lodge far less awkward.

Things to consider:

At 120 flex, this boot sits in the middle of Fischer's RC4 MV BOA range. The 130 MV BOA is the stiffer choice for heavier or harder-charging skiers, and the 110 MV BOA softens things for skiers still building strength. GripWalk soles need a GripWalk or multi-norm compatible binding.

Fit & sizing considerations:

The 100mm last puts this boot squarely in medium-volume territory, and skiers with narrower feet should look at the LV version with its 98mm last. Because this is a 120-flex performance boot with a moldable shell and liner, time with a certified bootfitter is the best way to get the most out of it.