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Scarpa Alien 4.0

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The Alien 4.0 is a full carbon ski boot developed with our top athletes for skimo races. The... more

Alien 4.0

The Alien 4.0 is a full carbon ski boot developed with our top athletes for skimo races. The anatomical shape of the shell guarantees a comfortable fit and the rockered shape ensures perfect energy transfer to the ski. The integrated gaiter prevents snow from penetrating the shell during the ascent and descent. The BOA® Fit System provides a stable and adjustable closure without pressure points. To get the most out of your ski boots, we recommend that you have the inner shoes thermoformed at a dealer from the SCARPA network.

The most important facts at a glance

waterproof

Product details

Optimal for:
  • Ski tour
  • Skiing
  • Hiking
  • Trekking (longer tours)
Made for:
Men

Technologies and manufacturing processes

  • ALIEN 4 GAITER

    The gaiter is made of nylon and spandex fibers woven together and provides greater elasticity for an easy fit. Also the rear part of the shell has a specially designed gaiter that prevents snow from penetrating downhill or when climbing.
  • SPEED LOCK SYSTEM LITE

    Lacing system consisting of the "A-Light" lever and a durable and lightweight Dyneema® cord, two tabs and two metal hooks. Thanks to the Speed Lock Lite system, the socket can be opened and closed with just one movement. The locking plate on the shell, which connects the lever to the shell, prevents the accumulation of snow and ice.
  • Boa® Fit System

    BOA® delivers fit solutions proven to increase agility and speed, power and precision, and health and endurance for athletes from all backgrounds. In the development of each unique configuration, the focus is on the Performance Fit, which ensures a precise fit and creates a better connection between an athlete and their equipment.
  • RACE 4.0 SL

    The thermoformable Intuition liner in the lightweight and comfortable lowcut version. Double Pull-Tab facilitates quick on and off.
  • RESOLEABLE

    This shoe can be resoled at an official SCARPA dealer. Repair your shoe before it is too damaged. Find your dealer in the dealer locator.
  • Vibram

    SCARPA relies on the high quality soles of Vibram® for its touring ski products, which are conceived and designed by specialists in collaboration between SCARPA and Vibram®. Thanks to selected compositions, the best possible performance and high grip are achieved, particularly suitable for activities in the snow. SCARPA by Vibram® stands for top performance, guaranteed grip and durability in all conditions.
  • INTUITION

    Intuition has over twenty years of experience and today manufactures hundreds of thousands of boot liners for the most important brands in the world. The products are worn by skiers, snowboarders, guides and instructors. Intuition liners offer the highest levels of thermal protection and lightweight performance, ensuring the highest technological standards for thermoformable liners. The exclusive thermoformable materials guarantee a durable fit.
  • QUICKSTEP

    Quick Step In inserts for easy and secure placement and attachment of the ski boot side grooves Allows easy entry into the stem. Patented, tested and guaranteed.
  • Gaiter

    When every gram counts on long climbs, our gaiter shell construction offers the perfect ultra-light solution that doesn't compromise downhill performance. The shell construction with Boa® Fit System is a great match for our lightweight, race-oriented ski boots and allows for secure, easy closure and maximum weight reduction while maintaining comfort and waterproofness.
  • Carbon fiber

    Due to its lightness and durability carbon has become an excellent material for the ski boots race. Carbon fiber is a material reinforced synthetic made of filaments, generally around a resin that keeps them in place and protects them and with what we call lightweight, resistant composite material. In addition to the above properties lightness and endurance We find low density, decent fire retardant properties, resistance chemicals and temperature fluctuations as well as capacity thermal insulating.