Lange RS 120 LV Ski Boots

Lange designed the RS 120 LV for skiers who refuse to compromise on power and precision on the slopes. With a flex rating of 120 and a narrow 97 mm Precision Fit, this boot is designed for advanced to expert skiers, instructors, and racers seeking a high-performance tool directly inspired by World Cup standards. The Lange RS 120 LV’s promise is clear: to maximize power transfer and responsiveness in every turn, without compromising foot support.

A narrow fit designed for technical efficiency

The LV (Low Volume) profile of the Lange RS 120 LV corresponds to a 97 mm last, known as Precision Fit. This reduced volume ensures optimal lateral and longitudinal support, eliminating micro-movements of the foot inside the shell. For expert skiers or racers with naturally narrow feet, this precise fit is a direct advantage: muscular energy is transferred to the ski without loss, without requiring compensation by tightening the buckles. If you have an average or wide foot, it is recommended that you consult a boot fitter before purchasing to verify a proper fit.

Power Transfer: A Race-Oriented Construction

The shell’s Overlap construction, combined with Dual Core technology, is at the heart of the RS 120 LV’s performance. Dual Core combines hard and soft plastics in precisely defined areas of the polyether shell, optimizing the boot’s flex while enhancing energy transfer where it’s needed most. The result: greater responsiveness and control during the push-off phase, without unwanted stiffness. The Race Flex Adjust system—a plate positioned at the rear of the boot—further refines this parameter by improving energy transfer between the shell and the cuff, allowing the flex to be adjusted without creating play or power loss. Added to this is the Air Flow concept, an aerodynamic design developed in partnership with the Sauber-Alfa Romeo Racing Formula 1 team and tested in a wind tunnel, which reduces air resistance in the racing position.

Fastening and Adjustments: Precision Down to the Millimeter

The RS 120 LV’s fastening system features articulated, screw-mounted Alu Race Micro aluminum buckles, which offer high mechanical strength and adjustment precision suited to the demands of competition. The Dual Screw canting system allows you to adjust the lateral alignment of the boot to correct the position of the knee on the ski—a particularly useful adjustment for skiers looking to optimize their skiing posture. A removable spoiler rounds out the package, allowing the forward flex stiffness to be adjusted according to the skier’s preferences or snow conditions.

Comfort and Customization: the Dual 3D Full liner

The Dual 3D Full liners integrated into the RS 120 LV are pre-shaped around the foot and ankle from the design stage, using high-density foam, for immediate comfort in the boot and precise support inspired by World Cup standards. These liners are customizable, making them compatible with in-depth boot fitting: a specialist can adapt them to your foot shape to further refine the fit and eliminate any remaining pressure points. The hard polyurethane foam insole completes this system by providing stable support underfoot.

The Lange RS 120 LV is designed for a specific type of skier: experts or competitors seeking a stiff, precise on-piste boot directly rooted in racing culture. Its 120 flex, narrow 97 mm last, and power-transfer technologies make it a solid choice for skiers who tackle demanding slopes and want immediate feedback underfoot. For skiers with narrow feet and advanced technical skills, it represents a serious technical option that must be tried on before purchase—ideally with the assistance of a boot fitter.