Fischer RC4 90 HV GW Ski Boots (U09423)

In the automotive industry, Gran Turismo (GT) vehicles are designed to cover hundreds of miles at a good pace without fatiguing the driver, combining a capable engine with a spacious interior. The Fischer RC4 90 HV GW applies this exact philosophy to the snow. They inherit the prestigious sports design of the RC4 range, but their "bodywork" features a High Volume (HV) construction starting at a 102 mm last. This widened chassis creates a generous cabin that perfectly accommodates wide feet and high insteps, eradicating pressure points and improving blood flow to keep feet warm.

The "suspension" is calibrated with a 90 flex. This is the ideal sweet spot: firm enough to transmit power directly to the edges when you decide to pick up the pace, yet progressive and elastic enough to absorb bumps, crud, and steering errors without punishing your shins or requiring exhausting physical effort.

Rounding out this dynamic comfort package, the boot is fitted with GripWalk (GW) "tires." These anti-slip rubber soles with a curved profile provide a natural rocking motion that transforms walking on ice or parking lot asphalt into a safe, comfortable stroll.

Technical Parameters

• Recommended level: Intermediate / Advanced (100% On-Piste / Gran Turismo All-Day).

• Flex Index: 90 (Balanced, reactive, and forgiving suspension for fatigue-free all-day skiing).

• Last (Internal width): HV - High Volume (102+ mm). Widened design for voluminous feet and maximum comfort.

• Shell Material: Polyurethane/Polyolefin (Good thermal response, lightweight, with an easy-entry zone).

• Soles: GripWalk (GW) - ISO 23223 (Superior traction and ergonomic walking off the skis).

• Liner: Thermoshape (Pre-shaped padding, superior insulation, and excellent adaptability).

• Buckles: 4 micro-adjustable aerodynamic alloy buckles.

• Power Strap: 35 mm Velcro for progressive tibial support.

• Manufacturer reference: U09423.