Scarpa Alien 1.0 Touring Boot

Carbon Skimo Race Boot Scarpa Alien 1.0 Touring Boot Skimo racers and skiers chasing vertical on the clock are who the Scarpa Alien 1.0 is built for. A hand-laid carbon cuff over a Carbon Grilamid LFT shell gives a race boot torsional stiffness that a 785 g shell has no business having. On a 99 mm last with a Dyneema cord and BOA dial rather than buckles, the Scarpa Alien 1.0 transitions in one motion and skis a 75 mm ski with more authority than the weight suggests. Expert Fit Review Fit profile and recommendations reviewed by CCBB bootfitters. Is This the Right Boot for You? Best For Skimo racers and fast ski mountaineers on narrow feet running pin bindings and skis 65 to 90 mm underfoot. Consider Another Boot If You need any binding other than pin/tech, want a boot you can punch, or ski wide skis where the descent matters most. CCBB Boot Ratings Uphill Efficiency 5/5 785 g per boot at size 27 Downhill Performance 2/5 Race flex, minimal shell Walking Comfort 5/5 Speedlock Lite cord release Transition Speed 5/5 Single-action cord and lever Rating scale: 5 = top of its class, 4 = excellent, 3 = good, 2 = specialized or below average, and 1 = limited. CCBB Fit Profile Overall VolumeLow Toe BoxNarrow Forefoot VolumeLow Instep HeightLow Heel HoldExcellent Ankle HoldExcellent PunchabilityPoor Heat MoldableYes Why We Like It At 785 g per boot the Scarpa Alien 1.0 is a true race weight, and the carbon cuff still holds an edge on a firm traverse. One motion releases the Dyneema cord and the Speedlock Lite lever together, so a transition takes seconds rather than fumbling with buckles. A BOA dial adjusts instep pressure without removing gloves, which matters at a transition in a race or on a cold summit. A 99 mm last is generous by race-boot standards and leaves room for circulation on long cold days. Best Uses Skimo racing and training Fast ski mountaineering objectives Skis 65 to 90 mm underfoot Fitness laps and uphill sessions Skiers running pin bindings exclusively Bootfitter's Advice The Scarpa Alien 1.0 runs a 99 mm last, narrow and low through the forefoot and instep, and comes in whole Mondo sizes only from 24 to 30. Sizing is decided by shell fit; there is no half-size fallback if a foot lands between two shells. Carbon Grilamid LFT, a carbon-reinforced nylon, tends to crack rather than stretch when heated, so this shell should be treated as effectively unpunchable. Fit is won with the Intuition Cross Fit BT liner, a heat-moldable foam liner, and with size selection, not with shell work. 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) Last 99 mm Flex 100 Shell Carbon Grilamid LFT, a carbon-reinforced nylon Cuff Carbon fibre, hand laid Tongue Synthetic, under an integrated gaiter Features and Compatibility Walk Mode Speedlock Lite ski/walk mechanism, single-action cord release Range of Motion Not published by Scarpa for the current Alien 1.0 Closure Dyneema cord with a BOA Fit System dial, no ladder buckles Binding Compatibility Pin/tech (low-tech) bindings only. The Vibram UFO race outsole is built to ISMF race standards and meets no ISO sole norm, so the Alien 1.0 is not compatible with alpine, AT/frame or MNC bindings. Optimized Touring Pivot: mount the tech toe 7 mm rearward of standard. Sole Vibram UFO race outsole, no ISO sole norm, with tech fittings for pin bindings only Forward Lean 9 and 13 degrees Liner Intuition Cross Fit BT liner, a heat-moldable foam Compare the Scarpa Alien 1.0 Alien 1.0 vs. Alien The Scarpa Alien is the training-and-touring build in the same family, using glass and carbon reinforced Grilamid rather than a full carbon cuff. The Scarpa Alien 1.0 is lighter and stiffer torsionally at a considerably higher price. Racers choose the Scarpa Alien 1.0; skiers wanting race efficiency for fitness laps choose the Scarpa Alien. Shop Scarpa Alien boots Alien 1.0 vs. Scarpa Alien 5.0 The Scarpa Alien 5.0 is the full-carbon competition boot, lighter again and built around a carbon shell as well as a carbon cuff. The Scarpa Alien 1.0 keeps a Carbon Grilamid LFT shell for durability and cost. Both are pin-tech only, and their toe pivot offsets differ, so confirm the figure for the boot you buy. Shop Scarpa Alien 5.0 boots Alien 1.0 vs. Scarpa F1 XT The Scarpa F1 XT carries 360 g per boot more and a buckle closure, and skis a genuine descent afterwards. The Scarpa Alien 1.0 is a race boot that tours superbly and descends adequately. Both are pin-tech only. Decide on whether the day ends with a race finish or a backcountry descent. Shop Scarpa F1 XT boots Common Questions What bindings work with the Scarpa Alien 1.0? Pin/tech (low-tech) bindings only. Scarpa lists the binding system for the Scarpa Alien 1.0 as TLT, and the Vibram UFO race outsole is built to ISMF race standards rather than any ISO sole norm. The Scarpa Alien 1.0 cannot be used with alpine, frame or MNC bindings under any circumstances. How far back does the toe piece mount on the Scarpa Alien 1.0? Scarpa specifies an Optimized Touring Pivot of 7 mm, so the tech toe mounts 7 mm rearward of the standard position toward the heel. That figure is specific to the Scarpa Alien 1.0 and differs across the range, so give it to whoever mounts the binding rather than assuming a shop default. Can the Scarpa Alien 1.0 shell be punched? Practically, no. Carbon Grilamid LFT is a carbon-reinforced nylon that resists heat forming and is prone to cracking when stretched. Treat the Scarpa Alien 1.0 as a boot fitted by size and liner mold rather than by shell work, and confirm fit before purchase. How much does the Scarpa Alien 1.0 weigh? Scarpa lists 785 g per boot at size 27. That places the Scarpa Alien 1.0 firmly in race territory, 360 g per boot under the Scarpa F1 XT and less than half the weight of a Scarpa Maestrale RS. Is the 100 flex rating comparable to an alpine boot? No, and reading it that way will mislead. Scarpa lists 100 for the Scarpa Alien 1.0, but that number describes a carbon race cuff on a minimal shell, not an alpine boot with a full overlap. Judge the Scarpa Alien 1.0 on weight and cuff stiffness, not on the flex figure. What sizes does the Scarpa Alien 1.0 come in? Whole Mondo sizes only, 24 through 30. There are no half sizes in this shell, so a shell fit is the only reliable way to size a foot that falls between two. Our Verdict The Scarpa Alien 1.0 is a race boot that behaves like one, and that is the point. A hand-laid carbon cuff on a Carbon Grilamid LFT shell delivers torsional stiffness at 785 g per boot, and a cord and BOA closure with the Speedlock Lite lever makes transitions a single motion. What the Scarpa Alien 1.0 asks in return is a narrow foot, a shell that cannot meaningfully be punched, and a pin binding, because the Vibram UFO race sole meets no ISO norm. For racing and fast ski mountaineering it is hard to better; for a daily touring boot it is the wrong tool.