




Alpine ski boots - Men -
Advice : Use the foot sizer from SIDAS to help you find the right size
The RC4 Free Pro MV Boa Vacuum GW is a men's alpine ski boot from the brand Fischer.
It is a freeride boot combining comfort and performance, suitable for very skilled skiers looking for an excellent balance between power and comfort.
You will be able to ski with commitment, and its numerous adjustments will allow you to perfectly tailor these boots to your morphology. You will appreciate its pre-shaped RC4 ZipFit® 3D liner for comfort throughout your mountain sessions and its Carbonfused® cuff which offers even more direct power transmission. Additionally, the Grip Walk® soles provide perfect grip when walking.
For even more mountain exploration, the RC4 Free Pro MV Boa Vacuum GW features Dynafit inserts to enable use in freerando and to enjoy the first lines of fresh snow.
The RC4 Free Pro MV Boa Vacuum GW has a medium last of 100 mm to combine comfort and precision. Its fitted liner ensures an optimal fit, and its 2 adjustable hooks, Phatt Max 50 mm strap, and BOA® Fit System - H+i1 provide a tailored, precise, and durable closure, guaranteeing a perfect adjustment.
Its stiff flex of 130 offers enough rigidity and precision appreciated by very skilled skiers to ski with commitment in powder and to land your jumps on natural features with comfort and support.
To top it all off, you can find the perfect fit for you using the Fischer Scan Fit app, which compares, for example, the fit of all brands.
The RC4 Carbon Pro MV Boa GW is the perfect boot for very skilled skiers, combining comfort and performance for days of pleasure floating on powder.
Compatible with hybrid freerando bindings (such as Duke or Shift), the boot does not have an endpiece insert at the heel for use with low tech bindings.

| MONDOPOINT SIZES | 25.5 | 26.5 | 27.5 | 28.5 | 29.5 | 30.5 |
| EU SIZES | 40 | 41.5 | 42.5 | 44 | 45 | 46.5 |
| UK SIZES | 6.5 | 7.5 | 8.5 | 9.5 | 10.5 | 11.5 |
| US SIZES | 7.5 | 8.5 | 9.5 | 10.5 | 11.5 | 12.5 |
| SHELL LENGTH (mm) | 296 | 306 | 316 | 326 | 336 | 346 |
- 2 adjustable GT hooks
- 50 mm Power strap
- BOA® Fit System - H+i1
| BOA® FIT SYSTEM - H+i1 | Dialed in. Locked in. Sovereignly, without any hassle. All this is the new High-Power BOA® system specially developed for alpine ski boots. It features a noticeable improvement in foot wrap by the shell as well as a new pressure distribution. A precise fit that can be tightened or loosened at any time thanks to the fine-tuning adjustment function. |
| GRIPWALK® SOLE | The GripWalk® soles (ISO 23223) ensure natural walking comfort, increased safety on slippery surfaces, and optimal downhill performance. Available for adults and children, they are 100% compatible with all boots in the Fischer collection. |
| CARBONFUSED® CUFF - ALPINE | Pebax® Rnew cuff reinforced with carbon fibres for improved stability and a stiffer flex. The very best, for skiers demanding top performance. |
| RC4 ZIPFIT® INNERBOOT | A boot that adapts to the ski boot shell – that’s the RC4 ZipFit® Innerboot! A co-branded product designed for long-lasting durability with unparalleled performance and dynamic fit in composite cork. The neoprene toe box liner is covered with merino wool to keep feet warm. Thanks to this liner, 10 additional flex points are automatically added. |
| TPU CUFF & SHELL | The Thermoshape polyurethane (TPU) material is the reference and industry standard for racing products, as it offers superior elasticity in ski boots compared to polyamide or polypropylene blends. TPU delivers an exceptional experience thanks to its rebound and energy transfer characteristics. ZoneFit and Process Vacuum at 120°C. |
| VACUUM | Perfect fit at 80°C to the foot’s anatomy for direct movement control and more rebound thanks to greater elasticity. More consistent temperature and 15% less weight. |
| GRINDABLE BOTBOARD | Sole specially designed to easily modify the shell’s height and angle. |
| SOMATEC® |
The natural V-position of the feet is maintained and the body’s centre of gravity is directly above the middle of the ski. This means you benefit from perfect power transfer, optimal grip, and absolute precision. |
| FISCHER SCAN FIT® LAST |
New generation lasts developed based on thousands of foot scans obtained via the FISCHER Scan-Fit® app. Guarantees an anatomical shape that offers better force transmission and improved control. |
| RD20 RACE CANTING |
The new generation of race canting is designed to reduce tolerance between the cuff and shell of the boot, allowing maximum power transfer and overall control. Available in asymmetric 2- and 3-point versions to allow collar inclination. |
| POWER STRAP 50mm + QUICKFIX CAM |
Power Strap 50 mm wide composed of multiple layers and elastic materials for a powerful and secure closure of the upper cuff. Maximises pressure distribution and energy transfer from the boot to the ski. Combined with a QuickFix mechanism that allows easy opening and closing of the strap without having to thread the strap end into the cam each time. |
| ORIGINAL DYNAFIT® INSERTS |
Guaranteed compatibility with all Low Tech type bindings, these inserts show high wear resistance. |
