Rossignol Radical World Cup SL 130 Ski Boots (RB21010)

In top-tier motorsport, a Formula 1 car strips away superfluous comforts: its sole purpose is to transmit every micro-steering command to the asphalt in fractions of a second. The Rossignol Radical World Cup SL 130 is the embodiment of this philosophy for the mountain. Its "chassis" is crafted from high-density injected polyurethane (130 Flex), acting as an unyielding monocoque under extreme G-forces.

The "steering" of this model has no filters. It is designed so that shin pressure generates an immediate, direct, and violent response on the ski edges. Its 97 mm cabin hugs the foot, providing maximum directional control without the pure asphyxiation of a plug boot.

The interior cockpit utilizes the lace-up Racing Fit liner, which acts like a true carbon fiber bucket seat. This system locks the foot and heel against the shell, eradicating any empty space that could cause understeer during a carved turn. Finished with bolted racing buckles and an extra-wide power strap, they are the absolute weapon for shaving tenths off the stopwatch.

Technical Parameters

• Recommended level: Professional / Master Racing (100% On-Piste / Competition).

• Flex Index: 130 (Racing suspension, ultra-stiff with instant rebound).

• Last (Internal width): 97 mm (Narrow Fit - High-precision racing fit).

• Shell Material: High-density injected Polyurethane (PU).

• Chassis Design: Sensor Inside (Direct contact between liner and lower shell for maximum sensitivity).

• Liner: Racing Fit (Extreme anatomical fit, thin walls, lace-compatible).

• Buckles: 4 micro-adjustable, low-profile alloy buckles, bolted for easy maintenance.

• Power Strap: Wide Racing Velcro for a strict tibial lock.

• Biomechanical Alignment: Dual canting (internal and external).

• Soles: Standard Alpine ISO 5355 (Solid racing norm).

• Manufacturer reference: RB21010.