How does the Vizion 4B step-in system work?

The Spine Link mechanism at the back of the boot opens the cuff wide when released, letting your foot slide straight in. Pull the lever up to lock the steel spine into ski position. No need to fight overlapping shells — the boot opens like a slipper and locks like a race boot.

Does the step-in design compromise ski performance?

No. When locked, the bi-injected spoiler creates a rigid seal equivalent to a traditional overlap boot. Dual Core technology provides targeted power transmission. On snow, it skis like any high-end 120-flex piste boot.

What is the difference between Vizion 4B Pro 120 MV and Vizion 4B 120 HV?

The Pro 120 MV has a 100mm medium-volume last for a more precise fit. The 4B 120 HV has a wider last for high-volume feet. Same step-in technology, different foot shape targets.

On Sale

Rossignol

Vizion 4B Pro 120 MV GW-MT BL

$524.30$749.00

Final Sale30% OFF

This item is over 30% off and non-returnable.

All sales are final. Returns or exchanges only accepted for manufacturer defects, shipping errors, or damage in transit.

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Boots Return Policy

All boots are subject to a 5% restocking fee if returned. Please ensure correct sizing before purchasing — contact us for help with fit.

size: 27.5

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Description

The Rossignol Vizion 4B Pro 120 MV GW is a 120-flex, 100mm last overlap boot built around one genuine engineering trick: the Step-In system, which uses an articulated spoiler and steel spine mechanism to let the upper cuff recline so you can slide your foot straight down into the boot. Once in, you flip the double buckle into position, the spine locks the cuff, and you're in a fully traditional overlap shell — four micro-adjust aluminum buckles, 40mm power strap, no compromises in the locked-in feel. The True Form Step-In Liner is heat-moldable, so it can be custom-shaped to your foot here at the shop, which matters in a boot this stiff — a properly fitted 120-flex liner reduces break-in time and eliminates the pressure points that turn good skiers against otherwise correct boots. GripWalk soles are pre-mounted, so the rockered rubber toe works on cobblestones and lodge floors without a sole swap. There is no ski-touring or walk-mode mechanism; the cuff articulation is for entry and exit, not skinning.

This boot is aimed at solid advanced skiers — people who are charging groomed runs hard, making deliberate carved turns, and generating real edge pressure. A 120 flex requires a strong, aggressive skier to flex it at all; if you're an intermediate who skis a few weeks a year, this boot will ski you rather than the other way around, and you'll end the day exhausted and sore. The 100mm MV last fits an average foot — not wide, not narrow. If your foot measures 102mm or more across the ball, you need the Vizion 4B Pro 120 HV GW, which opens to a 102mm last; if your foot is narrow or low-volume, the extra width here will leave your heel lifting and your control suffering. The Step-In mechanism is genuinely useful if you have a stiff ankle, limited mobility, or just hate wrestling your foot into a tight liner every morning — but if entry difficulty isn't your problem, you're paying for a feature you won't use. Come in and get measured. A 120-flex boot in the wrong last width is one of the more common misfits we see, and no amount of buckle adjustment fixes a shell that doesn't match the foot.

Flex	120
Last Width	100mm (MV)
Weight	~4,750g per pair
Shell	Overlap with Steel Spine Link
GripWalk	Yes (premounted)
Buckles	4 flat aluminum Double Buckle
Best For	Advanced-Expert — top-tier Vizion performance

Details

Type: Ski Boots
Vendor: Rossignol
SKU: RBN7032

PTO ReviewSki Boots

Rossignol Vizion 4B Pro 120 MV GW

Vizion 4B family · 25/26Walk Mode

Flex 120

Very Stiff

60708090100110120130

SofterStiffer

Last Width

100mm— Medium (100–101mm)

The Vizion 4B Pro 120 is Rossignol's flagship step-in boot, and it solves the oldest problem in skiing: getting into a stiff, performance boot without a 10-minute wrestling match. The Spine Link mechanism opens the back of the boot wide for slipper-like entry, then locks down with rigid PU support and a bi-injected spoiler that seals tight. Once locked, it skis like a traditional overlap boot — the Dual Core shell delivers targeted power transmission and the 100mm medium-volume last holds your foot precisely.

At $524 it's a premium investment, but you're paying for innovative engineering. The GripWalk sole comes pre-mounted, walk mode gives you mobility off-snow, and the flex 120 is stiff enough for strong advanced skiers pushing hard on-piste. If you've avoided stiff boots because of entry/exit pain, this changes the equation.

Strengths

+Spine Link step-in system — hands-free entry and exit, hands-free convenience
+Dual Core shell delivers race-level power transfer when locked down
+GripWalk pre-mounted + walk mode for genuine off-snow mobility

Best For

Advanced medium-volume skiers who want top-tier on-piste performance with effortless step-in entry.

Limitations

−Premium price at $524 — the step-in tech comes at a cost
−Spine Link mechanism adds complexity vs. a traditional overlap boot
−100mm last may be snug for wide feet — consider the Vizion 4B 100 HV (104mm)

Not For

Budget-conscious buyers, wide-footed skiers (look at the 4B 100 HV GW), or skiers who prefer a proven traditional overlap design.

Common Questions

How does the Vizion 4B step-in system work?: The Spine Link mechanism at the back of the boot opens the cuff wide when released, letting your foot slide straight in. Pull the lever up to lock the steel spine into ski position. No need to fight overlapping shells — the boot opens like a slipper and locks like a race boot.
Does the step-in design compromise ski performance?: No. When locked, the bi-injected spoiler creates a rigid seal equivalent to a traditional overlap boot. Dual Core technology provides targeted power transmission. On snow, it skis like any high-end 120-flex piste boot.
What is the difference between Vizion 4B Pro 120 MV and Vizion 4B 120 HV?: The Pro 120 MV has a 100mm medium-volume last for a more precise fit. The 4B 120 HV has a wider last for high-volume feet. Same step-in technology, different foot shape targets.