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Atomic·Ski boots·Accessories Ski Boots

Atomic Carbon Spine Speed Cuff

Carbon fiber replacement part for Atomic Redster ski boots that delivers direct power transfer and precise control for racing.

180 €
1Size
180 €
  • Delivery in 2–5 business days
  • 30-day returns
Ski expert
Not sure about the size? Chat with a ski expert, or call +46 370 33 97 70.
Carbon fiber
Power transfer
Carbon fiber delivers direct power transfer straight into the ski.
Lower profile
Mobility
The lower profile boosts lower-leg mobility for a quicker, deeper flex.
High stability
Stability
The stiff design gives control at high speed and aggressive skiing.

About Atomic Carbon Spine Speed Cuff – Accessories Ski Boots

The Atomic Carbon Spine Speed Cuff is a high-performance component developed for race-oriented boots in Atomic's Redster series. This is a spare part for those who want to maintain or restore the precise and responsive feel required in racing.

The Carbon Spine acts as the boot's backbone and is located on the back of the cuff. It is made of carbon fiber and provides extremely direct power transmission, ensuring that all energy goes straight into the ski without loss.

The Atomic Carbon Spine Speed Cuff has a slightly lower profile than a standard cuff. This increases mobility in the lower leg and makes it easier to flex the boot quickly and deeply. This is an important feature for competitive skiers who need to react instantly in every turn.

Despite its lower height, the construction is very stiff. This provides maximum stability and precision, giving you full control even at high speeds and aggressive skiing.

These boot accessories are an obvious choice for those who race or want a more direct and responsive feel in their boots.

Atomic Carbon Spine Speed Cuff, Specifications:

  • Fit: Speed Cuff
  • Material: Carbon fiber
  • Function: Power transmission
  • Profile: Lower cuff
  • Stability: Very high
  • Compatibility: Atomic Redster
  • Effect: Precision, response

Fit & last

The last is the boot’s width across the ball of the foot. 100 mm is a medium width and suits most people. If you have a wide foot or high arches, we can spot-heat the shell in the store where it presses. The boot should feel snug when you try it on: your toes touch the front when you stand straight and pull back when you bend your knees. The liner packs out 3–5 mm during the first week, so a boot that feels comfortable in the store will be too big after a week. Always measure mondopoint — boot size has nothing to do with your normal shoe size.

Boot fitting

Buy your ski boots from us and you get free boot fitting for 1 year from purchase. That means we heat-mould the liner and grind or punch the shell at no extra charge. If we need to add materials or products, such as a custom-moulded footbed, you only pay for those — not for the work. You’re welcome to drop into our store at Isaberg, Sweden for up to 1 year after your order is placed.

Shipping & returns

Delivery time: 2–5 business days to Germany, from our warehouse in Hestra, Sweden. If the boot doesn’t fit right, free boot fitting is included for 1 year from purchase. Call +46 370 33 97 70 if you’re unsure before you order.

Atomic Carbon Spine Speed Cuff specifications

CategoryAccessories Ski Boots
Skier levelExpert
FitSpeed Cuff
MaterialCarbon fiber
FunctionPower transfer
ProfileLower cuff
StabilityVery high
CompatibilityAtomic Redster
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Choosing ski boots
Your ski boots affect your skiing more than any other piece of equipment — and they’re the hardest to choose online. Below we go through mondopoint, flex, last and what a boot fitting does.
Mondopoint — measure your foot, not your shoe size
Ski boots are sized in mondopoint, which is the length of your foot in centimetres. Stand with your heel against a wall, mark your longest toe and measure. That measurement is your size. Your EU shoe size is a poor starting point because it varies between manufacturers. A ski boot should feel snug when it’s new — the liner packs out 3–5 mm during the first week of skiing.
Flex and what the number means
Flex describes how much force it takes to bend the boot forward. 60–90 is soft and forgiving, 90–110 is an all-round level, 110–130 is stiff for skiers who ski hard, and above 130 is race level. The number isn’t standardised between manufacturers, so a 100 from one brand can feel like a 110 from another. If you’re heavy or ski aggressively, you want a stiffer boot; if you’re lighter or a beginner, you want a softer one.
Last — the width of your foot
The last is the boot’s width across the ball of the foot. Narrow is around 98 mm, medium around 100 mm and wide around 102 mm. A medium last suits most people. If you have a wide foot, a last that’s too narrow isn’t something you get used to — but the shell can be heat-moulded to make room where it’s needed.
Boot fitting makes the difference
Nine out of ten skiers have something adjusted at their first fitting. We analyse your foot, heat-mould the liner and grind or punch the shell where it pinches. A custom-moulded footbed gives better heel hold and less foot fatigue, and is the single biggest improvement you can make without changing boots. Buy your ski boots from us and free boot fitting is included (materials such as footbeds are paid separately), and you’re welcome to drop into the store for up to 1 year after your order is placed.
Socks and fit go together
A thin, knee-high ski sock with no seams across the ball of the foot is the right choice. Thick socks make the boot tighter without making it warmer — it’s the air inside the boot that insulates, and a boot that pinches gives you cold toes. Never wear two pairs.
Frequently asked questions
Ski boots are measured in mondopoint, which is the length of your foot in centimetres. Put your heel against a wall, measure to your longest toe and choose that size. The boot should feel snug when it’s new.
Ski expert
Didn’t find your answer? Call +46 370 33 97 70 or chat with a ski expert.
Atomic Carbon Spine Speed Cuff
Select size
180 €