FISCHER RC4 120 LV VAG GW Men's Ski Boots (U05223)

The Fischer RC4 120 LV VAC GW represents the ultimate expression of applied engineering for high-performance on-piste skiing. Developed directly from Fischer's extensive World Cup expertise, these boots have been crafted for aggressive, technical skiers who demand immediate edge-to-edge response but refuse to settle for anything less than next-generation custom fit advantages.

The core foundation of its performance lies in the narrow low-volume last (LV - 98 mm), engineered to wrap the foot compactly and anatomically, entirely eliminating dead space inside the boot. This is seamlessly paired with the revolutionary VACUUM shell technology, manufactured from the exclusive Vacu-Plast compound. This system allows the outer shell to be fully heat-molded to fit the unique morphology of your feet down to the millimeter, effectively solving common pressure points around the ankles or metatarsals. Furthermore, Vacu-Plast stands out for maintaining its stable elastic properties in extreme cold, preventing the boot from becoming excessively rigid and uncomfortable during harsh winter days.

Technical efficiency is boosted by the Soma Tec architecture, which respects the natural "V-position" of the feet, enabling you to steer your skis with surgical precision with significantly less strain on your knees. On the inside, the 3D pre-shaped RC4 Performance liner holds the heel immovably in place, optimizing energy transfer and maintaining an ideal foot climate. Rounded out with the customizable Grindable Tongue, micro-adjustable aluminum race buckles, and revolutionary GripWalk soles, the RC4 120 LV is the ultimate premium tool to dominate the slopes with absolute authority and confidence.

Technical Parameters

• Flex Index: 120 (High stiffness tailored for athletic performance and instant power transfer).

• Last Width: 98 mm (LV - Low Volume, a surgically precise, narrow fit for maximum lateral control).

• Shell Technology: VACUUM (Fully heat-moldable shell at 80 °C allowing a perfect anatomical fit to the skier's foot contours).

• Shell Material: Vacu-Plast (Fischer's exclusive polymer that guarantees a consistent and predictable flex regardless of outdoor temperature changes).

• Soma Tec: Factory-integrated natural "V-position" of the feet, which optimizes ski control and protects knee and ankle joints.

• Liner: RC4 Performance (3D pre-shaped with high-density foam for immediate heel retention and premium thermal insulation).

• Adjustable Tongue: Grindable Tongue (Modifiable tongue that allows thickness reduction to relieve pressure on high insteps).

• Soles: Pre-mounted GripWalk (GW) (Provide superior grip when walking on icy or slippery surfaces, along with a much more natural foot roll).

• Buckles: 4 micro-adjustable, low-profile RC4 aluminum buckles.

• Power Strap: 45 mm heavy-duty velcro strap for a solid, highly responsive upper cuff closure.

• Recommended Level: Advanced - Expert.