Dynafit ZZero 4 C-TF Alpine Touring Boot - 2007 BCS

This boot is a unisex boot. If you are a 22.5 in a woman's boot, you will be a 22.5 here. Typically "women's" boots may have a narrower liner and/or a wider cuff. I can't say for sure if it will fit your foot, but it's worth trying. This is a great lightweight but powerful AT boot.

Jeff, They run right about in the middle of the AT boots out there. The custom liner will cover most feet. If you have a super-wide foot or have funky protuberances, you may need to modify the shell. Best to head to a good bottfitter for this.

Great Ryan. How about refund?

Backcountry has a great return policy so you'll be good to go if they don't fit for some reason. Just stick them back in the box and send back for an exchange.

Dynafit boots tend to run more narrow than Scarpa, I'd put them on par with Technica. They arn't any longer or shorter than any other boots out there, I've never noticed any difference in length between brands. Could be your are asking where the shell splits. It's on the whole sizes for dynafit.

Can you haet mold the liners at home, yes. Can you jack up your boots doing this, FOR SURE. Give a local boot fitter some cash and some beers... You'll be glad you did.

Thanks Dwayne. Well a local ski tech measured my feet (looked to be between 8 and 8.5) and said I should get an 26.0 boot. But then we were talking about Black Diamond boots. Not sure about Dynafit. Do the Dynafits run big or small, wide or narrow? Also, can I heat mold them myself?

well that is the pro and con of internet shopping right there. Backcountry has a great return system, and I have never had to return anything, I hear the reps are great and very helpful getting you the ones you need. Best bet here is to really read up about them, not just here, but do a google search. It also might help you to get your feet professionally sized. Not the kid at Walmart, but a proper show store, that the employees know feet

Yes, the shell can be customized by either grinding or heating/stretching, preferably by a very competent bootfitter. Typically, if such modifications overly damage the boot, it won't be covered under warranty. Both shells will work for customization.

In general terms, Dynafits have a mid to narrow width, mid-volume last.

The soles are very durable within the realm of their intended use. The softness will give you awesome grip for ridge scrambling. Long treks across parking lots, etc. will definitely wear them more quickly. I wouldn't advise resoling, even if you could find a cobbler to do it. You run the risk of screwing up your binding release values.

You have to take flex indexes with a grain of salt because each manufacture's ratings are different. AT boots also lack the progressive feel of a regular alpine boot, they're either engaged or not. Buckled real tight on the cuff in the 15 degree mode I'd say mine are around 110-115. Sometimes they feel stiffer than that, but feel as though they lack some power because they're so lightweight. Laterally they're incredibly stiff for the weight because of the carbon stringers.

The Factors are indeed dynafit compatible, IF you buy the extra AT soles (about $40, sad with an already $700+ boot). Factors will ride much more like a traditional alpine boot, but they are 2lbs heavier per boot, and don't have as much flex in walk mode.

I would go with these they are good for anything and they are Dynafit compatible, i dont think that the BD Factors are. Get um SHRED AND NEVER LOOK BACK!!!! GO BIG OR GO HOME!!! IMPULSE BUY DO IT DO IT!!!

A little late... but the C-TF is made of Pebax with carbon fiber reinforcement, while the U-TF is made of Polyurethane w/o carbon fiber. This means that the C-TF is lighter and stiffer.

I have probably 70+ days on these and the carbon stringer has held up well -- yes I've scratched it, but no more than any other pair of boots I've owned. Ultimately, I think the longevity of these boots is excellent.

Get the intuition liners to dial in the fit,but these boot do fit a narrower type foot.

There is no rule of thumb for how much thermo - moldable liners will contract or give when molded to a customers foot. Basically the idea is that through thermo - molding the liner is generally formed to your foots shape. It does not act as a foam injected liner does and contour to every detail in your foot and lower leg. It puts the liner in that basic shape so that it will be able to mold easier during the first weeks of use. In short, thermo - moldable liners, no matter which manufacturer or boot type ease the break in process and make boots that much more tolerable during the first five to ten times of use. Make sure you do this before you walk out the store with them so you can be sure of fit.

have been using the zzero 4 C-TFs all season in Marker Baron bindings (the boots are fantastic- both plenty stiff and comfortable like house shoes once they have been thermal fitted). With the correct toe height and forward pressure adjustments these boots have paired just fine with the bindings, holding me in and releasing when they should. Have had no problems with this combination, despite sharing the same concerns as you initially.

I have used these boots for teh past year with my Marker dukes with no problems. The dukes do not have an adjustable toe height I don't think. Shoudl be OK with most bindings.

AT boots with AT lugged soles are not to be used in Standard Alpine Bindings!! Even if it has an adjustable toe height. Alpine bindings do not work with a rubber lugged sole.

these will work in a traditional AT binding, and some Alpine binding that have an adjustable toe height. there are NO swappable soles.

-G

Yes, they will. Most people would probably put them in AT bindings, but either way, they'll work.

They will work with traditional bindings as I mentioned above, but even if you don't have the box, you can return them in another box and will have no problems.

Yes, most all crampons will work with these. These will work with Step-in, Hybrid, or Strap-on models.

I have a pair of two year old size 28 Garmont Mega LItes and they measure out at 320 mm. I also have Dynafit TLT's, size 29, and they are marked and measure 320 mm also. The sole lenth is identical to size 29 Scarpa F1's. Therefore, it appears that Garmont has put a size 28 liner into a size 29 shell. I also have a pair of old Lowa Structura's, size 28.5, which is same as US size 10.5, and they are marked 316 but measure out at 312 sole length. An Atomic Alpine boot of mine, size 28, is marked 317 and a size 27 Rossignol is marked 311, but measures more like 312. From all of this you can conclude that the sole length, especially in an AT boot, depends on the manufacturer, in particular if they want to cover more sizes with fewer shells. All of this said, I believe 315 - 317 is the correct sole length for a size 28. I believe there is a DIN (German Industrial Norm) specification for this, but it must be loose enough to allow these variations.

I would check out the Dynafit Zzeus or the Titans. They're PU instead of Pebax so you can manipulate the boot with much greater ease and they are both MUCH stiffer than this boot. This is a sweet boot, just different. Right now I ski the titans and will be switching to the Zzeros when I abandon resorts completely.

Check these out: http://www.backcountry.com/outdoorgear/Black-Diamond-Factor-Alpine-Touring-Boot-Mens/BLD0358M.html Black Diamond Factor. I don't have any info on the plastic thickness, though...

Hi Cameron-
The non carbon version is actually five grams lighter and you would notice some additional lateral rigidity but the forward flex is just about the same.
Cheers.

ZZero 4C-TF LIGHTESS 4 buckle boot 1595 to 1745 grams using carbon and pebax!TF 4 free touring 1710 to 1860 grams( polyurethane) GETS STIFFER IN THE COLD!Cool looking see through red!Both compatible with dynafit bindings! or any ski touring binding!

The only solutions for this boot would be to change that forward lean, and to get a sock with a heavier padding on the shin. Other than that I would say look at some boots that come with a tongue that offers more flex.

Get the Dynafit Zzeus, it is made of Polyurethane so your boot fitter can modify it properly.
Pebax boots may be lighter, but they don't take modifications like Polyurethane does.
In addiiton, the Zzeus comes with universal sole pucks so you can ski it with any binding.

well, gee, guess we're all looking for that, ehh?sure, try the scarpa mountaineering boots: closest I've found to that dream.

If you haven't thermo-molded the liner yet you should do that. I would not recommend going with a bigger shell size because the boot will pack out and you don't want it to loosen up too much.

Mondo lengths for Scarpa AT and Dynafit AT boots that I have tried seemed pretty similar. I think the published size charts are way off. I wear a 12 street shoe (though narrow.) The 29/29.5 shell is the right length for me from both manufacturers, but Scarpa is much too wide. The Dynafit boots are more my width, but still need a it of insole build up. The Scarpa shell was labeled US 12, Dynafit US 11 for basically the same length.

My experience regarding sizing is different from the two answers below. I ordered based on these answers and found the boots way too big. I'm a 13 regular shoe size, but wear a Mondo 29 in a Scarpa F3. Based on these comments I decided to order a 30 in Dynafit, and the thing is HUGE. In conclusion, for me the Scarpa and Dynafit sizing are very similiar in Mondo sizing. 29=29.I have found that the Dynafit sizing system fits more true than other manufacturers. Meaning, if you are a 10.5 shoe size, go with the 28.0 Mondo. I tried on the ZZero C4 and the ZZues by Dynafit and I fit much better into the 28.0 Mondo shell. My foot was cramped and it hurt after 5 minutes of putting the 27.0 on. In comparison, the 27.0 Shell in the Black Diamond factor was a much better fit while the 28.0 was too large. It depends on the manufacturer's shell sizing and the foot shape of the individual. But like I said, in my personal experience, the Dynafit boots fit more true to your actual foot size. So if you are a 10.5 and you are looking into these boots, then go with the 28.0. If anyone else has a different opinion then please chime in. Just wanted to add my comment, I also am 10.5 I just bought these in a 28. They fit perfect. In my true alpine boots I have always worn a 27.5 but the Dynafit 27.5 was just a bit to snug. The boots are great, plenty stiff. I had been skiing a old T2 and was concerned about enough stiffness in a AT boot, but these are more stiff than my alpine boots.

Heck yeah. Just look at the comments below by Zaid, Alpine331, and Anonymous. But depending on your overall ski goals, you might also want to check out the new ZZeus!I agree!

I'd take a look at Dalbello or Technica boots for that kind of foot shape.