Scarpa Alien 1.0 Alpine Touring Boot Ski Boots - Touring Boots - Race Scarpa
Scarpa Alien 1.0 Alpine Touring Boot Ski Boots - Touring Boots - Race Scarpa
Scarpa Alien 1.0 Alpine Touring Boot Ski Boots - Touring Boots - Race Scarpa
Scarpa Alien 1.0 Alpine Touring Boot Ski Boots - Touring Boots - Race Scarpa
Scarpa Alien 1.0 Alpine Touring Boot Ski Boots - Touring Boots - Race Scarpa
Scarpa Alien 1.0 Alpine Touring Boot Ski Boots - Touring Boots - Race Scarpa
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Scarpa Alien 1.0 Alpine Touring Boot

$1,274.25 $1,699.00
Size
2 in stock
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Boot Fitters Advice
Description

The Scarpa Alien 1.0 is a 785 g (size 27) carbon skimo race boot with a 99 mm last, hand-laid carbon cuff, 75-degree range of motion and one-throw transitions, built for racing on pin-tech bindings.
Tech Specs
Features

  • Flex: 100 (Scarpa). A stiff race-boot flex from the full-carbon cuff, not an alpine 100.
  • Weight: 785 g per boot (size 27), Scarpa reference; Skimo Co measures 792 g.
  • Last: 99 mm, a narrow, medium-volume race fit.
  • Walk Mode: Single-throw Speed Lock Lite lever with 75 degrees of range of motion.
  • Shell: Carbon Grilamid LFT lower with a hand-laid carbon fiber cuff.
  • Liner: Intuition Cross Fit BT, heat-moldable, with an integrated gaiter.
  • Sole: Minimal Vibram UFO race sole with certified tech inserts, pin-tech only.
  • Closure: Cord and BOA, no ladder buckles.
  • Forward Lean: 9 and 13 degrees.
View details

Elite Carbon Skimo Race Boot

Scarpa Alien 1.0 Alpine Touring Boot

The Scarpa Alien 1.0 Alpine Touring Boot is a 785 g (size 27) elite skimo race boot with a 99 mm last, a Scarpa-rated 100 race flex, and a minimal Vibram UFO race sole that meets no ISO norm, built for competitive racing and fast ski mountaineering. A Carbon Grilamid LFT lower, a hand-laid carbon cuff, a cord-and-BOA closure and a 75-degree range of motion deliver a frictionless stride with race-first stiffness.

Expert Fit Review Fit profile and recommendations reviewed by CCBB bootfitters.

Is This the Right Boot for You?

Best For
Competitive skimo racers and fast-and-light ski mountaineers with narrow, medium-volume feet who want the lightest carbon boot that still skis with authority, on race and touring skis 65 to 90 mm underfoot with pin-tech bindings.
Consider Another Boot If
You want a warmer or higher-volume boot, need frame, MNC or alpine binding compatibility, plan to drive wide freeride skis, or prefer a punchable shell, since the carbon lower cannot be modified much.

CCBB Boot Ratings

Uphill Efficiency
5/5
75 ROM at 785 g
Downhill Performance
4/5
Full-carbon cuff stiffness
Walking Comfort
5/5
Near-frictionless stride
Transition Speed
5/5
Single-throw Dyneema lever

Rating scale: 5 = top of its class, 4 = excellent, 3 = good, 2 = specialized or below average, and 1 = limited.

CCBB Fit Profile

Overall VolumeMedium
Toe BoxNarrow
Forefoot VolumeNarrow
Instep HeightMedium
Heel HoldGood
Ankle HoldGood
PunchabilityLimited (carbon shell)
Heat MoldableYes

Why We Like It

  • At 785 g per boot (size 27), the Alien 1.0 is among the lightest boots that can still drive a real ski.
  • A hand-laid carbon cuff wraps the leg for lateral support and edge control that skis stiffer than the weight suggests.
  • The 75-degree range of motion and single-throw Speed Lock Lite lever give a near-frictionless stride and instant, self-aligning transitions.
  • A Carbon Grilamid LFT lower resists spreading open, so the Alien 1.0 skis with authority on race and light touring skis.
  • The internal cord-and-BOA closure sets fit cleanly and resists snagging on branches or edges.
  • The Intuition Cross Fit BT liner and integrated gaiter add warmth and weather protection over a bare race boot.

Best Uses

  • Skimo racing and competition
  • Fast ski mountaineering and traverses
  • Big-vertical training days
  • Race and touring skis 65 to 90 mm underfoot
  • Racers with narrow, medium-volume feet

Bootfitter's Advice

The Scarpa Alien 1.0 fits as a narrow, medium-volume race boot on a 99 mm last with a medium instep and a secure heel. We size it close to true Mondo, and since Scarpa builds it in full sizes only, a 26.5 foot and a 27 foot share the 27 shell. The lower shares its shape with the standard Alien, so skiers who fit one usually fit the other.

The carbon in the lower is concentrated below the cuff rivet, and Scarpa does not recommend punching it, so confirm the shell fit before buying and tune with the moldable Intuition liner, heel shims and a footbed. Skiers with wide forefeet or high insteps should shell-fit carefully or consider a higher-volume touring boot.

Fit profile reviewed by CCBB bootfitters. Final sizing should be confirmed with a shell fit whenever possible.

Technical Specifications Manufacturer specs · Click to expand

Fit and Construction

Weight
785 g per boot (size 27), Scarpa reference. Skimo Co measures 792 g.
Last
99 mm
Flex
100 (Scarpa). A race-boot flex from the full-carbon cuff, not directly comparable to an alpine flex index.
Range of Motion
75 degrees
Shell
Carbon Grilamid LFT lower
Cuff
Hand-laid carbon fiber

Features and Compatibility

Walk Mode
Single-throw Speed Lock Lite lever with Dyneema cord
Closure
Cord and BOA
Binding Compatibility
Pin-tech (low-tech) race and touring bindings only. The minimal Vibram UFO race sole meets no ISO norm, so the Alien 1.0 is not compatible with frame, MNC, or alpine bindings.
Sole
Minimal Vibram UFO race sole (meets no ISO norm) with certified tech inserts
Forward Lean
9, 13 degrees
Liner
Intuition Cross Fit BT, heat-moldable

Compare the Scarpa Alien 1.0

Alien 1.0 vs. Scarpa Alien

The standard Alien uses a non-carbon Grilamid cuff and a fuller liner, coming in 100 g heavier at a fraction of the price. The Alien 1.0 adds a hand-laid carbon cuff for more stiffness and a 75-degree range of motion, making it the choice for racers who want the lightest, stiffest option.

Shop Scarpa Alien boots

Alien 1.0 vs. Scarpa F1 LT

The F1 LT is a heavier race-plus touring boot at 995 g with a BOA forefoot and a wall-like flex for skis up to 100 mm. The Alien 1.0 is over 200 g lighter, walks with more range and transitions in one throw, but is a dedicated race boot better suited to skinnier skis.

Shop Scarpa F1 LT boots

Alien 1.0 vs. Dynafit DNA

Both are elite carbon race boots built for the podium. We find the Alien 1.0 offers more skiable stiffness and a fuller liner with its integrated gaiter, while the Dynafit DNA is a lighter, more minimalist pure-race tool for skiers chasing the lowest possible weight.

Shop Dynafit DNA boots

Common Questions

Who should buy the Scarpa Alien 1.0?
The Scarpa Alien 1.0 suits competitive skimo racers and fast-and-light ski mountaineers with narrow, medium-volume feet who want the lightest carbon boot that still skis with authority, on skis 65 to 90 mm underfoot with pin-tech bindings.
Is the Scarpa Alien 1.0 really a 100 flex?
Scarpa lists the Alien 1.0 at a 100 flex, but that is a race-boot figure from the full-carbon cuff and is not comparable to an alpine 100. We find it skis very stiff and supportive for 785 g, though the flex is firm rather than progressive, which is normal for a carbon race boot.
What bindings does the Scarpa Alien 1.0 work with?
The Scarpa Alien 1.0 is pin-tech only. Its minimal Vibram UFO race sole meets no ISO norm, so it works only with pin-tech (low-tech) race or touring bindings and is not safe in frame, MNC, or ISO 5355 alpine bindings. The certified tech inserts are required for pin bindings.
How does the Scarpa Alien 1.0 differ from the standard Alien?
The Alien 1.0 uses a hand-laid carbon cuff and a lighter build to reach 785 g with more stiffness and a 75-degree range of motion. The standard Alien uses a Grilamid cuff and a fuller liner, weighs 100 g more and costs far less, on the same 99 mm lower shell.
Can the Scarpa Alien 1.0 be punched?
Only minimally. The carbon in the lower sits below the cuff rivet, and Scarpa does not recommend punching it, so fit tuning relies on the moldable Intuition liner, heel shims and a footbed. Confirm the shell fit before buying, especially through the forefoot.
How does the Scarpa Alien 1.0 sizing run?
The Alien 1.0 runs close to true Mondo length and comes in full sizes only. It shares its lower shell with the standard Alien, so a skier who fits one will fit the other in the same size. Confirm with a shell fit rather than a street-shoe conversion.
Is the Scarpa Alien 1.0 warm enough for cold days?
For a race boot, yes. The Intuition Cross Fit BT liner and the integrated gaiter add warmth and keep snow out better than a bare race boot, though skiers with cold feet on long, low-output days may still want an overboot.
Is the transition really one step?
Yes. The single-throw Speed Lock Lite lever with its Dyneema cord flips between walk and ski in one motion and self-aligns as you stand up, saving seconds at the top of a climb where a race is won or lost.

Our Verdict

The Scarpa Alien 1.0 is a top-tier carbon race boot that skis better than its 785 g suggests. The hand-laid carbon cuff and Carbon Grilamid LFT lower give real edge control, the 75-degree range of motion and one-throw lever make it fast in transitions, and the integrated gaiter adds warmth. It fits a narrow, medium-volume foot, barely punches, and is strictly pin-tech, so it is a racer's tool first.