RC4 110 MV BOA Ski Boots 2027

The Fischer RC4 110 MV BOA is the advanced all-mountain ski boot for skiers who want genuine performance without the uncompromising stiffness of a 120 or 130 flex. With a 110 flex and a 100mm medium-volume last, this boot strikes the balance that suits the widest range of committed all-mountain skiers — responsive and precise enough for aggressive carving and technical terrain, yet accessible enough for longer days and varied conditions without undue fatigue.

What sets the RC4 110 MV VAC BOA apart is the combination of Fischer's proprietary VACUUM shell technology with the BOA H+i1 Fit System. VACUUM technology uses Vacuplast plastic — a material developed exclusively for Fischer — which is heat-mouldable by a bootfitter to precisely match the contours of the skier's foot, reducing shell volume where needed and expanding it where required. No other heat-moulding technology does both.

The BOA H+i1 system then delivers micro-adjustable, precision shell wrapping at the pull of a dial. The iFZ Performance liner provides a thermoformable, close fit, while the Grindable Bootboard allows a bootfitter to fine-tune the forward lean and stance angle. GripWalk-compatible sole for natural walking off the slope.

Features

• BOA H+i1 Fit System — micro-adjustable shell wrapping for a precise, secure fit across a wide range of foot shapes

• VACUUM Shell Technology (Vacuplast) — Fischer-exclusive Vacuplast plastic heat-moulds to match the exact contours of your foot; the only technology that can both reduce and expand shell volume

• iFZ Performance Liner — thermoformable liner for a personalised, supportive fit with all-day comfort

• Fischer Scan-Fit Last — last geometry developed from thousands of foot scans for an optimal out-of-box fit for most foot shapes

• Grindable Bootboard — allows a professional bootfitter to adjust the height and angle of the bootboard to optimise forward lean and stance

• RD20 Race Canting — lateral cuff alignment for improved edge grip and balance across varied terrain

• SOMA-TEC — Fischer's shock-absorbing insole technology for enhanced comfort and energy return

• GripWalk Sole — natural walking gait and improved traction off the slope

Specifications

Last: 100mm 

Flex: 110

Closure: BOA H+i1 + 2 micro-adjustable RC4 buckles + 45mm Velcro strap

Sole: GripWalk (ISO 23223)