Dynafit Blacklight Alpine Touring Boot Ski Boots - Touring Boots - Ski Mountaineering - Mens Dynafit 23
Dynafit Blacklight Alpine Touring Boot Ski Boots - Touring Boots - Ski Mountaineering - Mens Dynafit 23
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Dynafit Blacklight Alpine Touring Boot

$489.97 $699.95
Size
1 in stock
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Boot Fitters Advice
Description

The Dynafit Blacklight Alpine Touring Boot is a 1-kilogram-class carbon speed touring boot on a 101mm last, pairing a race-like 60-degree stride with firm-for-the-class power for fast tours and ski mountaineering.
Tech Specs
Features

  • Flex: No numeric index from Dynafit. Stiff and light for the class, close to a tongueless TLT6 Performance.
  • Weight: 1,078 g per boot (size 27.0) measured; Dynafit states 990 g at MP 26, a 1-kilogram-class weight.
  • Last: A 101mm last with a wide, rectangular, higher-volume fit.
  • Walk Mode: Ultra Lock System 5.0 with a hyperflexible tongueless flex for 60 degrees of range of motion.
  • Shell: Carbon-loaded Grilamid lower shell with a full carbon cuff for power transfer at low weight.
  • Liner: Thermo-moldable Dynafitter 5 liner.
  • Sole: Pomoca rubber touring sole with toe and heel welts and Master Step tech inserts, for pin-tech bindings only.
  • Closure: One Ultra Lock buckle plus a Twistfit instep dial and optional power strap.
  • Forward Lean: 15 or 18 degrees with the spoiler.
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1-Kilogram-Class Speed Touring Boot

Dynafit Blacklight Alpine Touring Boot

The Dynafit Blacklight Alpine Touring Boot is a 1-kilogram-class speed touring boot with a 101mm last, a stiff carbon flex that Dynafit does not assign a numeric index, 60 degrees of range of motion, and a lightweight Pomoca pin-tech sole. Built on the TLT X lower with a full carbon cuff, the Blacklight walks close to a race boot while transferring more power to the ski. We reach for it on big-vertical tours, ski mountaineering objectives, and fast spring missions where every gram counts.

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

Is This the Right Boot for You?

Best For
Fit tourers and ski mountaineers who want a 1-kilogram-class boot for big-vertical days and fast missions, and who value a wide, accommodating fit and a race-like stride more than four-buckle downhill power.
Consider Another Boot If
You want the damp, progressive power of a heavier freeride touring boot, ski mostly wide resort skis, or need a numeric flex rating and a traditional buckle layout to feel confident driving a ski.

CCBB Boot Ratings

Uphill Efficiency
5/5
60 ROM near 1 kg
Downhill Performance
3/5
Firm for its class
Walking Comfort
5/5
Race-like tongueless stride
Transition Speed
5/5
One-lever Ultra Lock

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

CCBB Fit Profile

Overall VolumeHigh
Toe BoxWide
Forefoot VolumeWide
Instep HeightMedium
Heel HoldMedium
Ankle HoldMedium
PunchabilityModerate
Heat MoldableYes

Why We Like It

  • At 1,078 grams per boot in size 27.0, the Dynafit Blacklight tours with the lightest speed boots while skiing firmer than most of them thanks to the full carbon cuff.
  • The 60-degree range of motion and hyperflexible tongueless walk mode give a long, low-friction stride for skinning, bootpacking, and scrambling.
  • The Ultra Lock System 5.0 integrates the ski/walk mechanism with the top buckle, so transitions take one lever throw.
  • The Twistfit instep dial locks the foot from the instep to the heel, tightening heel hold that lighter cable and velcro systems often leave loose.
  • The carbon-loaded Grilamid lower shell and full carbon cuff transfer power well for a boot in the 1-kilogram class.
  • Toe and heel welts accept automatic crampons, and the Master Step tech inserts pair with pin-tech touring bindings.
  • We find the Blacklight fits wider and more rectangular than most speed boots, which suits normal-to-wide feet that fight narrow race lasts.

Best Uses

  • Ski mountaineering and technical objectives
  • Long, high-vertical tour days
  • Fast-and-light spring missions and traverses
  • Touring skis 85 to 100 mm underfoot
  • Skiers with average-to-wide, higher-volume feet

Bootfitter's Advice

The Dynafit Blacklight Alpine Touring Boot fits as a higher-volume boot on a 101mm last, with a roomy, rectangular forefoot and toe box and an average heel and ankle. It shares its shape with the TLT X, so skiers who fit that boot fit the Blacklight, and skiers who found narrow race lasts like the Scarpa F1 LT too tight usually find the Blacklight more comfortable.

The carbon-loaded Grilamid shell can be heat molded and punched a little for length or width, but not dramatically, so shell fit first and do not size up for comfort. The stock Dynafitter 5 liner is thin and packs out over time, and heel-lift-prone skiers may want a heel pad or a thicker aftermarket liner rather than a smaller shell.

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
1,078 g per boot (size 27.0) measured. Dynafit states 990 g at MP 26.
Last
101 mm
Flex
Not assigned a numeric flex index by Dynafit. Stiff and light for the class, comparable to a tongueless TLT6 Performance.
Range of Motion
60 degrees
Shell
Carbon-loaded Grilamid lower shell
Cuff
Full carbon cuff

Features and Compatibility

Walk Mode
Ultra Lock System 5.0, integrating the ski/walk mechanism with the top buckle
Closure
One Ultra Lock buckle plus a Twistfit instep dial and an optional velcro power strap
Binding Compatibility
Pin-tech (low-tech) bindings only. The lightweight Pomoca sole carries Master Step certified tech inserts but meets no alpine (ISO 5355) or touring (ISO 9523) sole norm, so it is not compatible with frame, MNC, or alpine bindings.
Sole
Pomoca rubber touring sole with toe and heel welts for automatic crampons, plus Master Step tech inserts; meets no alpine or touring sole norm
Forward Lean
15 degrees, 18 degrees with spoiler
Liner
Dynafitter 5, thermo-moldable

Compare the Dynafit Blacklight

Blacklight vs. Dynafit TLT X

The Dynafit Blacklight uses the same accommodating TLT X lower shell and Ultra Lock system, but adds a full carbon cuff that makes it a touch stiffer both fore-aft and laterally. The TLT X costs less and flexes a little softer, so skiers who want maximum value pick the TLT X, while those who want more power in the same fit pick the Blacklight.

Shop Dynafit TLT X boots

Blacklight vs. Scarpa F1 LT

Both are 1-kilogram-class speed boots that walk exceptionally well. The Scarpa F1 LT runs narrower and lower in volume with a BOA forefoot, while the Dynafit Blacklight fits wider and more rectangular with a Twistfit dial, so the choice comes down mostly to foot shape.

Shop Scarpa F1 LT boots

Blacklight vs. Tecnica Zero G Peak Carbon

The Tecnica Zero G Peak Carbon skis with a more progressive, ski-boot-like carbon flex and a slightly narrower fit, while the Dynafit Blacklight is lighter to move in, wider through the forefoot, and quicker to transition with its single Ultra Lock lever.

Shop Tecnica Zero G Peak Carbon boots

Common Questions

Who should buy the Dynafit Blacklight Alpine Touring Boot?
Fit tourers and ski mountaineers who want a 1-kilogram-class boot for big-vertical days and fast missions. The Dynafit Blacklight suits skiers with average-to-wide, higher-volume feet running touring skis 85 to 100 mm underfoot.
Does the Dynafit Blacklight have a 130 or numeric flex?
No. Dynafit does not assign a numeric flex index to the Dynafit Blacklight. We find it stiff and supportive for a 1-kilogram carbon boot, close to a tongueless TLT6 Performance, but it is not a substitute for a heavier four-buckle boot with a stated 120 or 130 flex.
What bindings work with the Dynafit Blacklight?
The Dynafit Blacklight is built for pin-tech (low-tech) touring bindings only. It has Master Step certified tech inserts, but its lightweight Pomoca sole meets no alpine (ISO 5355) or touring (ISO 9523) norm, so it is not compatible with frame, MNC, or standard alpine bindings.
How wide does the Dynafit Blacklight fit?
The Dynafit Blacklight fits wider than most speed touring boots on its 101mm last, with a roomy, rectangular forefoot and toe box. We find it above average in volume for the class, which helps skiers who find narrow race lasts uncomfortable.
How does the sizing run?
Length runs close to true Mondo size, and the Dynafit Blacklight fits identically to the TLT X. Confirm with a shell fit rather than converting from street-shoe size, since the thin Dynafitter 5 liner leaves the shell doing most of the work.
How stiff is the walk mode and how good is the range of motion?
The Dynafit Blacklight offers 60 degrees of range of motion with a hyperflexible tongueless walk mode, so it strides close to a race boot. The Ultra Lock System 5.0 then locks the cuff firmly for the descent, though a small amount of built-in cuff play is normal in ski mode.
Can the Dynafit Blacklight drive a bigger ski?
Within reason. We pair the Dynafit Blacklight with touring skis 85 to 100 mm underfoot and find it firm enough for variable snow at speed. Skiers charging wide resort skis will want a heavier four-buckle boot.
Is the Dynafit Blacklight warm enough for winter touring?
The stock Dynafitter 5 liner is thin and built for high-output days, so skiers with cold feet or long low-output winter tours often add a warmer aftermarket liner.
Is the Dynafit Blacklight the same as the new Blacklight 2.0?
No. The Dynafit Blacklight Alpine Touring Boot here is the carbon-cuff TLT X-based speed boot with the Twistfit dial and Ultra Lock system. The newer Blacklight 2.0 is a heavier, Hoji Lock, tongueless version built on the Ridge lower shell, sold separately.

Our Verdict

The Dynafit Blacklight Alpine Touring Boot is one of the more accommodating boots in the 1-kilogram class. It gives up the damp, four-buckle power of a heavier freeride touring boot, but in return it tours with the lightest speed boots on the market while skiing firmer than most of them. The full carbon cuff, the single-lever Ultra Lock transition, and the 60-degree range of motion make it a genuine tool for ski mountaineering and big-vertical days. It fits best on average-to-wide, higher-volume feet, and it rewards skiers who value a fast, efficient uphill.