Built for precision-driven piste skiers with narrow feet, the RC4 Carbon Pro LV BOA 115+ blends race-bred control with refined comfort. This is a boot for skiers who demand exact edge engagement, instant response, and confidence at speed—without sacrificing fit or warmth.
At its core is Fischer’s CARBONFUSED® Alpine cuff, combining carbon fiber reinforcement with Pebax® Rnew to deliver exceptional lateral stiffness and rebound. Paired with a tuned 115+ flex, the boot provides powerful energy transfer while remaining accessible enough for long, high-performance days on hard snow.
The BOA® H+i1 Fit System replaces traditional buckles with micro-adjustable precision, wrapping the shell evenly around the foot for unmatched pressure distribution and a locked-in feel. Inside, the RC4 ZipFit® liner elevates comfort and control with a dynamic cork composite that molds over time, enhancing heel hold, warmth, and responsiveness—while effectively adding stiffness for aggressive skiing.
Designed using FISCHER Scan-Fit® data, the narrow 94 mm last offers anatomical precision straight out of the box, while extensive bootfitting options ensure a truly customized setup. From first carve to last run, this boot delivers uncompromising piste performance with modern adjustability.
CARBONFUSED® Alpine Cuff
Carbon-reinforced Pebax® Rnew construction for maximum stability, rebound, and torsional control.
BOA® Fit System (H+i1)
High-power, micro-adjustable shell wrapping for precise fit, even pressure distribution, and on-the-fly tuning.
RC4 ZipFit® Innerboot
Cork composite liner adapts to your foot shape over time, improves heel retention, boosts warmth, and increases effective flex.
Narrow Performance Last (94 mm)
Precision fit developed using Fischer Scan-Fit® data for maximum power transfer.
RC4 Power Elastic Strap (50 mm) + QuickFix Cam
Elastic power strap enhances cuff closure and energy transmission while allowing fast entry and exit.
SOMA TEC® Stance
Slightly abducted natural stance promotes joint-friendly skiing and precise ski control.
Grindable Bootboard
Enables fine-tuned stance and ramp angle adjustments for expert boot fitting.
GripWalk® Soles
Improved walking comfort and traction without compromising alpine performance.
Fit: Narrow
Last Width: 94 mm
Flex: 115+
Skill Level: Expert
Activity: Piste
Closure System: BOA® Fit System
BOA Lace Length: 400 mm
Strap: Power Strap 50 mm + QuickFix Cam
Cuff Fixation / Canting: RD20 Race Canting
Liner: RC4 ZipFit® Black
Sole: GripWalk®
Boot–Binding Compatibility: GripWalk®
Ski boots are sized in Mondopoint, based on the length of your foot in centimeters. The chart below is a general reference for converting between sizing systems.
This chart is not a fitting. The only way to know your ski boot size is to be fit in person, either with a Boot Fitting at our shop or from a professional fitting you have had elsewhere. Sizing, shape, and volume vary by brand and model, and a performance fit is snugger than your street shoe. Unworn boots can be returned under our return policy, but a boot that doesn't fit can be a big hassle for your trip if you haven't tried it on.
| Mondo (cm) | US Men's | US Women's | EU |
|---|---|---|---|
| 22/22.5 | 4/4.5 | 5/5.5 | 35 |
| 23/23.5 | 5/5.5 | 6/6.5 | 36/37 |
| 24/24.5 | 6/6.5 | 7/7.5 | 38 |
| 25/25.5 | 7/7.5 | 8/8.5 | 39/40 |
| 26/26.5 | 8/8.5 | 9/9.5 | 41 |
| 27/27.5 | 9/9.5 | 10/10.5 | 42/43 |
| 28/28.5 | 10/10.5 | 11/11.5 | 44 |
| 29/29.5 | 11/11.5 | – | 45/46 |
| 30/30.5 | 12/12.5 | – | 47 |
| 31/31.5 | 13/13.5 | – | 48/49 |
| 32/32.5 | 14/14.5 | – | 50 |
Conversions are approximate and can differ by half a size between brands.
Ski boots are built with one shell for each full and half size, so a 27 and a 27.5 are the same boot with a different liner or footboard. That is why sizes are listed together, like 27/27.5.
Very few models differ from this. Scarpa is the main exception, pairing sizes the other way (for example, 26.5/27 share a shell). When a model is sized differently, we call it out on that product's page.
Book a Boot Fitting with our team at (802) 253-4531. Preliminary boot work is included with every boot purchase.
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