La Sportiva Kilo XTR Alpine Touring Boot
Couldn't load pickup availability
Description
The La Sportiva Kilo XTR Alpine Touring Boot is a 1,247 g mid-weight ski mountaineering boot with a 100.5 mm last, claimed 120 flex, and a Force Flex tongue for touring skis up to 100 mm.
Tech Specs
Features
- Flex: Claimed 120 via the Pebax Rnew Force Flex tongue. Stiff and progressive for a mid-weight boot, softer than a plastic 120 freeride boot.
- Weight: 1,247 g per boot (size 27.5) as we weigh it; La Sportiva states 1,190 g at size 26.5.
- Last: 100.5 mm, a medium-volume fit that runs a touch wide with a narrow heel.
- Walk Mode: Tilt-Lock Lite ski/walk lever gives a 68-degree range of motion.
- Shell: Grilamid Bio-Based LF Carbon with a Pebax Rnew Force Flex tongue.
- Liner: Ultralon high-density, heat-moldable Kilo XTR liner plus a WarmSole insert.
- Sole: FriXion Wave Alpine XTR outsole (ISMF race-sole standard) with certified tech inserts.
- Closure: 2 Force buckles with the Force Power Buckle and a power strap.
La Sportiva Kilo XTR Alpine Touring Boot
The La Sportiva Kilo XTR Alpine Touring Boot is a 1,247 g (size 27.5) mid-weight ski mountaineering boot with a 100.5 mm last, a claimed 120 flex, and a FriXion Wave Alpine XTR sole, built for tourers who want more support on the descent. La Sportiva adds a Pebax Rnew Force Flex tongue to the Kilo shell for firmer forward drive while keeping a 68-degree range of motion and a WarmSole insert.
Is This the Right Boot for You?
CCBB Boot Ratings
CCBB Fit Profile
Why We Like It
- The Pebax Rnew Force Flex tongue gives the Kilo XTR a progressive forward flex that drives skis better than the tongueless Kilo.
- At 1,247 g per boot in a 27.5, the Kilo XTR stays in the mid-weight class while skiing close to heavier boots.
- The 68-degree range of motion keeps the skin track efficient once the buckles and power strap are loosened.
- The Ultralon high-density liner, the same foam family used in Intuition liners, molds to the foot and adds warmth.
- The WarmSole platform separates the foot from the carbon shell for cold winter belays.
- The Tilt-Lock Lite ski/walk mechanism is quick and secure, and the FriXion Wave Alpine XTR sole grips well on rocky approaches.
Best Uses
- Ski mountaineering and everyday backcountry touring
- Big-vertical days that still demand a confident descent
- Touring skis 90 to 100 mm underfoot
- Cold-weather missions where warmth matters
- Skiers with average-to-wider, medium-volume feet
Bootfitter's Advice
The Kilo XTR shares the Kilo lower shell and its 100.5 mm last, so it fits medium overall with a generous ball of the foot, a snug narrow heel, and a toe box that tapers to a point. After fitting hundreds of skiers, we find it runs a touch wider and higher in volume than the Tecnica Zero G Peak Carbon, and narrower and more pointed at the toe than the Atomic Backland XTD. Skiers who need sixth-toe clearance should plan on shell work.
Getting the full 68-degree range of motion takes a moment of fiddling with the upper buckle and power strap at transitions, so practice the routine. The carbon-infused Grilamid shell heat molds and accepts limited punching, and the Ultralon liner packs slightly over time, so we set the initial fit a hair snug through the instep.
Technical Specifications Manufacturer specs · Click to expand
Fit and Construction
- Weight
- 1,247 g per boot (size 27.5) as we weigh it. La Sportiva states 1,190 g at size 26.5.
- Last
- 100.5 mm (size 26.5)
- Flex
- Claimed 120 by La Sportiva via the Force Flex tongue. It is stiff and progressive for a mid-weight touring boot, but skis softer than a plastic-shelled 120 freeride boot.
- Range of Motion
- 68 degrees (33 back, 35 front)
- Shell
- Grilamid Bio-Based LF Carbon
- Cuff
- Grilamid Bio-Based LF Carbon with a Pebax Rnew Force Flex tongue
Features and Compatibility
- Walk Mode
- Tilt-Lock Lite ski/walk lever, glove friendly
- Closure
- 2 Force buckles with the Force Flex tongue, Force Power Buckle, and power strap
- Binding Compatibility
- Pin-tech (low-tech) bindings only. La Sportiva's FriXion Wave Alpine XTR sole meets ISMF race-sole geometry, not ISO 5355 or ISO 9523, and the boot carries certified tech (pin) inserts. Not compatible with frame, MNC, or alpine bindings.
- Sole
- FriXion Wave Alpine XTR outsole (ISMF race-sole standard) with certified tech inserts and an internal WarmSole platform
- Forward Lean
- 12 and 14 degrees
- Liner
- Ultralon high-density thermo-moldable Kilo XTR liner
Compare the La Sportiva Kilo XTR
La Sportiva Kilo XTR vs. La Sportiva Kilo
The Kilo XTR adds a Pebax Rnew Force Flex tongue for a claimed 120 flex and firmer forward drive, at 128 g more per boot than the tongueless La Sportiva Kilo. The Kilo walks more freely and weighs less, while the XTR skis with more support in variable snow.
Shop La Sportiva Kilo bootsLa Sportiva Kilo XTR vs. Scarpa F1
Both are mid-weight touring boots that blend a good uphill with a workable descent. The Scarpa F1 uses a BOA and a carbon-infused tongue and steps into a wide range of tech bindings, while the Kilo XTR relies on buckles and a Force Flex tongue and runs a hair wider through the forefoot.
Shop Scarpa F1 bootsLa Sportiva Kilo XTR vs. Tecnica Zero G Peak Carbon
The Tecnica Zero G Peak Carbon is lighter and narrower with a more pointed carbon flex, while the Kilo XTR runs wider and higher in volume with a WarmSole insert for cold days. We steer narrow, weight-focused skiers to the Peak Carbon and average-to-wider feet to the Kilo XTR.
Shop Tecnica Zero G Peak Carbon boots