Black Diamond Quadrant Alpine Touring Boot

Priced: $479.25 - $639.00 Rated:   - 4 stars out of 5 by 6 reviews.
Black Diamond Quadrant Alpine Touring Boot
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Available Colors:
Evo (2013) $479.25 - $639.00
28% off
Regularly: $669.00
Gearx $479.25
28% off
Regularly: $669.00 $639.00
4% off
Regularly: $669.00
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Black Diamond Quadrant Alpine Touring Boot -

Men take note: Black Diamond's Quadrant Alpine Touring Boot offers the lightweight chassis of a touring boot and the power and precision of a freeride boot all in one. Precise and stiff enough for long, high-speed turns, this AT boot is a tool for seasoned backcountry skiers who want to take on steep mountains and skin-accessed terrain without sacrificing downhill performance. In walk mode, you're treated to a massive 40 degrees of buttery-smooth cuff flex and in ski mode, the cuff locks securely into place against the shell of the boot for rock-solid shredding. The Quadrant is the stiffest of Black Diamond's alpine touring boots and it's built for technical ascents and neck-snapping speeds.


  • Anti-microbial liner fabric with smooth finish for easy entry/exit


  • Efficient Fit AT Light liner is stiff and lightweight, designed specifically for touring
  • Truelasted liner fits your foot right out of the box or it can be easily thermomolded for a truly custom fit
  • Zero-compaction Strobel liner for consistent fit


  • Liner also features an antimicrobial treatment to stop funky odors, a smooth interior finish so it's easy to slide your foot inside, and a multi-density Achilles' pad insert


  • Triax pivot frame is a touring-focused frame design that offers alpine-style power transfer and smooth, natural striding motion when you're touring


  • Buckle closeout dents have a hooked shape that locks the QuickWire buckles securely in place once the buckle is flipped down

Traction and Grip:

  • Rubber outsole has a rockered shape that dramatically increases traction and allows for the most natural foot roll when you're hiking or bootpacking


  • Hook-and-Loop Fastener Power Strap


  • V-shaped last has a 103mm toebox to give your toes room to move and allow ample circulation for warmth
  • In walk mode, the pivoting cuff naturally slides up and out of the way of your instep buckle to allow the boot to flex further forward
  • 120-rated flex index provides enough stiffness to precisely control your skis and just enough forgiveness to make long days of touring easier on your foot
  • Pivoting cuff locks into the edge of the instep cuff in ski mode, pressuring against the boot shell for stiffness and power
  • Four-buckle design offers the traditional security and power transfer of an alpine boot balanced with the free-flexing cuff technology of Black Diamond's Pivoting Cuff
  • 103 mm forefoot width
  • Liner secures with the Boa closure system that you can tighten or loosen with the spin of a dial
  • Pivoting cuff design offers resistance-free movement in tour mode so you get a whopping 40-degree range of motion with each step: 20 degrees back and 20 degrees forward
  • Tech inserts give you the option to use this boots with Tech-style touring binders
Evo (2013)
Ski mountaineers with a wide foot who ski remote terrain hard and fast (or who frequent fall-you-die stuff) will find a lot to like in the Black Diamond Quadrant Alpine Touring Ski Boots. Re-engineered in a less garish color scheme than previous years, and with a completely new 1:1 Efficient Fit Boa® liner that weighs less and tightens up much faster, the Quadrant will still drive the biggest skis and ski the burliest lines with complete authority. The Triax Pivot Frame combines skiing precision with tremendous 40˚ flexibility in tour mode, and the four buckle design lets you fine tune your fit for optimal control on the descent.


The only sacrifice you should be making this winter is to Ullr for more snow. Don't sacrifice skiability or tourability with the Black Diamond Quadrant. This boot will have you floating up the hills with its lightweight design and 40 degrees of resistance-free touring motion but will be ready to take on the toughest terrain with a responsive Flex 120, overlap shell and ultimate power transmission on the way down.

New Efficient Fit AT Liner with 1:1 Boa closure system, improved fit and articulating zones provides ultimate, all-day, long-lasting touring comfort. Added plastic liner tongue for a smooth, evenly distributed flex matches with 4 buckles and improved power strap for maximum stiffness. This 103mm, V-Shaped, last boot is equipped with locking QuickWire cuff buckles, rockered, rubber outsole and integrated tech inserts to provide dramatic grip and durability for all of your ski adventures this winter.

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Black Diamond Quadrant Alpine Touring Boot Reviews:

Positive Reviews:

I have a size 8.5-9 foot (street shoes) (26 Mondo) with a wide forefoot, skinny heel, high instep, massive arch, and skinny thighs and ankles, and I usually run a 300-307 BSL. I've been sizing down a 25/25.5 and figured that these boots would do the trick.
The 25.5 size (25 shell) left less than a finger width (10mm wide Sharpie) when shell sizing, which left little wiggle room for the toes when kicking or the space taken up by custom insoles (in my judgement). The liner felt tight out of the shell (not molded) and in the shell there was more than a 'moderate' amount of pressure on my big toes. Good news, the boot volume was right where I felt it should have been and the cuff height was decent. Here's the cliche at work: it's always easier to make a small boot larger...etc, etc. While I prescribed to this when I raced, now that I spend long mornings or days touring, a little extra room in the toe box is a welcome relief and if the rest of the fit is right, it takes nothing away from ski control. That said, I decided to pass on these boots based on the fit for MY foot.
Side note: after comparing the overall build and features to the Scarpa Maestrale and Maestrale RS, I was much more impressed by the liner, walk/ski mechanism, and buckle placement and construction on the Scarpa boots. The BD *felt* (subjective) a little cheaper than the Scarpa's. Had the fit been right this wouldn't have stopped me from choosing the BD's but it did give me a moment of pause.
Four stars because I'm not going to moderately rate a boot I haven't actually skied.
Disclaimer: boot fitting is an art and there are more variables to getting the right fit than anyone would like to admit. This is an anecdotal, tried-on-in-the-house review. Take it with a grain of salt.

Austin H. at on 10/21/2013

Folks, I adjusted my boots just a minute ago and I just have to share with you the experience....
OK, So I tried and thermo-fitted the boots at local shop and decided to purchase them....
At home )of course) I was trying several times and I felt something was missing.....
I didn't feel perfectly comfortable wearing the boots and actually was even a little worried if I will make it with those boots....
When I was wearing them, I felt the boots were kinda over-powering me leaning my body too much forward and also my knees were pulled inside wile standing on flat floor....So I did the adjustments of forward lean and canting....People, seriously - it's like totally different boot. Now I it is sooo good to wear them and - it will probably sound a little strange, but - even my feet feels a lot better in the liner wearing the boots....
So the bottom line:
Please, Please adjust your boots to your personal the forward lean and canting adjustements.....
Below is the link to how to do it...It's very simple....Just grab that freaking HEX Key and do it.....
Just a bonus - the video shows that you should take the liners out....well I forgot about it and did the adjustments with the liners inside and it worked just as fine.
Good luck.
"In Powder We Trust" ;)

Robert Rudnik at on 10/28/2013

This weekend I toured 17 miles in one day in these boots, skinning, skiing, and bootpacking, and came out without a single sore or blister. These boots are incredibly lightweight and comfortable, have great flexibility in tour mode, and are plenty stiff for downhill descents, to the point where they work perfectly as a resort boot as well. I couldn't be happier with this boot.

bryp124936 at on 02/12/2013

I use these for both in bounds and backcountry skiing. They are pretty comfortable for going uphill and down. The only time I notice these don't have the same stiffness as a regular alpine boot is on moguls but I didn't buy the setup I have to mess with that junk. at on 03/29/2013

So awesome..more comfortable while skinning and skiing than even my slippers! So light, the walk function is great...I'm really really impressed.

johp100023 at on 10/25/2012

Negative Reviews:

I owned these boots and sold them.
The plus is that they are stiff and have a lot of Range of Motion in the walk mode. They ski pretty well.
The Bad...for me
The liners are a piece of junk, just figure that those will be sold right away and replaced.
The foot buckles go right over and press down over the nerve in your foot that will make them numb and colder.
They need to redo the liner and pull the plastic over the top of the foot more with a bulge so your feet don't fall asleep.

Joe Schaaf at on 12/24/2012