Lange RS 120 LV Review: Precision and Power for Expert Skiers

Introduction

The Lange RS 120 LV is a low-volume alpine ski boot with a 120 flex, built for skiers who want a very tight, precise fit and a direct connection to the ski. It sits in the brand’s high-end performance range, with a slightly softer liner and a standard velcro power strap rather than the racer-style strap used further up the line.

For expert skiers who find a 130-flex shell to be more stiffness than they want, the RS 120 LV keeps the stiff, race-influenced character of the RS family while making the overall package a little more manageable.

Who This Boot Is For

This boot is aimed at the high-end expert skier who wants the best possible performance from a ski boot and has a genuinely low-volume foot. The fit is low volume and tight over the instep, so it rewards skiers whose feet match that shape.

If you have a narrow foot, a low instep, and you prioritize precision over padding, this is the kind of shell that feels locked in from the first turn. Skiers who need extra room across the forefoot or a more relaxed overall fit will find it unforgiving by comparison.

It is also a sensible choice for strong skiers who want a stiff boot but do not want to commit to the very stiffest option available. The 120 flex still delivers a firm, supportive feel without the full demands of a 130.

Main Strengths: A Solid Sole and Direct Power Transfer

The most distinctive part of the RS design is its solid alpine sole. There is no GripWalk option here, just a full plastic sole, which keeps every movement you make going straight into the ski rather than being softened by a walking interface.

That directness is reinforced by a plastic boot board. The board does not run the full width at the bottom of the shell, so your foot can push against the shell on the inside and outside of the boot. The result is extra snow feel and a more connected ride.

For skiers who care about edge-to-edge response and immediate feedback underfoot, this combination is the main reason to consider the RS 120 LV over a more comfort-oriented boot.

Liner, Buckles, and Fit Details

The shell is closed with four micro-adjustable aluminium buckles, plus macro adjustments at the top of the cuff. A standard velcro power strap finishes the closure. The hardware is straightforward and highly adjustable, which matters on a boot this stiff.

Inside, the Dual 3 liner sits one step below a World Cup liner in terms of stiffness. It is slightly softer than what you would find in the 130 version of the boot, which takes a little of the edge off without changing the overall character.

The custom tongue is designed to mold to your shin, adding comfort at the front of the leg while the rest of the fit stays tight and low volume over the instep.

Flex and Cuff Adjustments

At 120 flex, the boot is still very stiff. It is a performance-first shell that expects a strong skier and rewards a committed stance rather than a relaxed one.

Two flex adjustments at the back of the cuff let you tune how the boot responds, and upper cuff alignment adjustments let you set the cuff angle to suit your leg shape. These are practical setup features rather than headline technology, and they are genuinely useful for dialing in a precise fit.

Things to Consider Before Buying

Fit is the first thing to weigh up. This is a low-volume boot that runs tight over the instep, so it suits skiers with narrower feet and lower insteps. If you normally need extra room or a wider last, the RS 120 LV is unlikely to feel comfortable.

The sole is another consideration. Because there is no GripWalk option, the boot is not designed around easy walking on rock, stairs, or parking lots. The full plastic sole exists for on-snow connection, so expect to trade some off-snow convenience for that directness.

There is also the matter of stiffness. The 120 flex is softer than a 130, but it remains a very stiff boot. Skiers who want a more forgiving flex, a plusher liner, or a racer-style power strap should think carefully about how this model sits in the range and whether the 130 or a comfort-focused boot better matches their skiing.

Buying Advice

Choose the RS 120 LV if you are an expert skier with a low-volume foot, you want a tight and precise fit, and you value a solid sole that transfers movement directly to the ski. It makes the most sense for skiers who spend their time carving on groomed terrain and want immediate response.

If you are deciding between this boot and a stiffer sibling, the question is how much stiffness you actually want. The 120 flex is the more approachable choice for skiers who do not need the total stiffness of a 130, while keeping the low-volume, performance-focused build intact.

Because fit matters more than any single specification, plan to have the shell checked against your foot shape before committing, and remember that the custom tongue is designed to mold to your shin for added comfort as the liner settles in.

Conclusion

The Lange RS 120 LV is a focused, high-end boot for a specific skier: low volume, expert level, and looking for precision rather than comfort. Its solid alpine sole, plastic boot board, and stiff 120 flex give it a direct, responsive feel, while the Dual 3 liner, custom tongue, and adjustable cuff keep it practical to set up. If that profile matches your foot and your skiing, it is a strong foundation to build a season around.