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Slip into the Dynafit ZZero 4 PX-TF Alpine Touring Boot for easy skinning up to the ridge and then moderately stiff performance during the deep downhill reward. Said to be the lightest high-performance four-buckle boot available, this boot's Pebax shell and Rilsan Powerstringer provide both rigidness and forgiveness to match your downhill powder obsession. While rigid, the shell is also lightweight and yields amazing uphill capabilities with the walk mode's 30-degree cuff rotation.

  • Mid-stiff Rislan material in the instep and Powerstringers efficiently transfer energy to your glides
  • Thermo-moldable Thermoflex liner insulates your foot and allows for complete customization
  • Long tour friendly Pebax tongue flexes smoothly and consistently providing a great run down the mountain (and is made from 100% natural Castor beans)
  • Cuff locks down with a 15 or 21-degree forward lean to match your level of alpine ambition
  • DynaGrip Ultralight outsole provides steady grip on boot packs
  • Micro-adjustable magnesium buckles enable fine-tuning of the boot to fit your foot
  • Compatible with Dynafit Quick-Step-in binding systems as well as the new TLT binding (sold separately)

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Here's what others have to say...


Tongue Broke on 4th use

  • Familiarity:I've used it once or twice and have initial impressions

I bought these at the end of last year on sale while I was gearing up a for a completely new setup (boots/bindings/skis). Was just getting to a decent fit and the left shell tongue broke about midway--at the flex point where there are fold features. I did notice that when I was skiing and driving hard, the left boot was making a clicking sound, like it does when clicking into ski mode from walk mode....although it was definitely in ski mode the whole time. When I went to use them the next time, the tongue just fell off! I haven't used them enough to give a real review on performance, but based on this early component failure I don't have high hopes. And since I bought them almost a year ago, I am worried about how they will treat the warranty even though I haven't even used them much.

Would you thermo mold these boots?

Would you thermo mold these boots?

Yes. It is possible to ski out of the box, but will be much more comfortable and precise with molding.

will this boot work well with BD Fritschi...

will this boot work well with BD Fritschi Freeride Pro bindings?

It will work fine. I've used my Dynafit Titans with Fritschi's and they worked great. Just be sure to adjust the toe height properly so they release when they should.

does it fit people with very wide feet?

does it fit people with very wide feet?

The widest AT boots are typically BDs. The last on these is stated as 103mm, but can feel narrower. Dynafits typically run medium to narrow.

I have owned the Dynafit ZZero 4 C-TF for a couple of years, and they are allegedly the widest last Dynafit offers. I also have a wide foot, but it is low volume and my heel is small-to-average. I find that some boots that have a wider last (i.e. Black Diamond , Scarpa) also have too much volume, but the bigger problem is that the heel pocket is also enlarged so I get lots of heel raise. My Dynafit ZZero 4 C-TF fit great. I did have to get a couple of very minor holes punched, and added some addition padding to the achiles to lock the heel in more, but they really were great even to begin with for my foot shape.