Dynafit Radical Binding
Dynafit has taken a classic 90's expression and slapped it onto the Radical ST binding to let you know how amazing it truly is. Note that Radical should be capitalized, which is pretty much an invite for you to get Rad, something you can very much do with this stout yet lower weight binding. A flick of the wrist (or pole) has you changing riser heights on the fly for those steep skin tracks, mellow approaches and everything in between. The hope is that every day is a powder day so the toe pins are built to break through compacted snow and ice that can build up on those deep days. Send to your hearts content, the lateral release is aided by a sliding plate under the heel for consistent release and the brakes will keep your skis close by to avoid awkward penguin slides to retrieve equipment. Tried and true, a real classic, legendary performance; however you want to say it the Dynafit Radical ST binding has a track record of performance that speaks for itself.
- 6mm plates under the toe and heel transfer power across a wide surface area for extra stability and control at speed.
- Speed Step heel climbing bar offering 2 riser heights in addition to flat, which can be flicked into place with a pole after a little practice.
- Power Towers on the toe pieces help guide your boots into the pincers, with bonus protection from side impacts.
- A full 25mm of fore/aft heel adjustment adapts to various boot sole lengths, which can increase the resale value as more people can step in.
- Brakes are included with 92mm, 100mm, and 110mm options to match the width of your ski.
- The brakes have a glide plate intended to reduce friction from rubber boot soles when releasing sideways.
- Anti-rotational device on the brakes ensures the heel piece doesn't rotate accidentally and put you in ski mode while skinning.
- Crampon slots are designed to hold Dynafit ski crampons for those steep and greasy skin tracks.
Update 2018/19 - The Radical ST is back and lighter than ever! Dynafit changed from steel to aluminum in the toe piece, ensuring time-tested performance both up and down but at a weight savings of 30g per side. The binding also gets new anodizing for a sleeker look.
Update 2021/22 - Dynafit dropped "ST" from the name, making this binding purely Radical. They also reshaped the toe lever (known as an excenter in Dynafit parlance) and reinforced the roof on the heel housing, somehow dropping another 15 grams.
| Specifications | |
|
Weight |
516g [92mm] |
| Weight (pair) | 1032g [92mm] |
|
Boot |
Tech |
|
Brakes |
92, 100, 110 |
|
BSL |
25mm |
|
Riser |
2 + flat |
|
Vertical |
4-10 |
|
Lateral |
4-10 |
|
Crampon |
Yes |
| Specs Verified | Yes |
| Design | |
|
|
7075 aluminum, steel pins, high-strength plastic |
| Skimo Co Says | |
| Usage | Backcountry, sidecountry, out-of-the-country |
| Notes | Anti-rotation device on the brakes prevents accidental transitions |
| Bottom Line | Good balance between weight, performance, and safety |
| Compare to other Full-featured Bindings | |
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Questions & Reviews
11/10/2025
Is it possible to remove the brakes from these bindings?
11/10/2025
Shawn- No you cannot remove the brakes from this binding. If you want brakeless with the same features look at the Dynafit Speed Radical.
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10/2/2025
Hello - We bought the Dynafit Radical ST Binding from Skimo back in Sept. 2016 for my wife and she's used it quite extensively. It's still doing great but we're thinking of getting a second one. We use the Quiver Killer on all our skis and she wants to be able to have more than one ski available at a moments notice. Given that we're using the Quiver Killer system, is the mounting pattern still the same as the one we bought from you back in 2016? And are there any other Dynafit bindings that have the same mounting pattern as this binding? Thanks!
10/2/2025
Hi Dan, glad to hear the bindings have worked well for you! The mount pattern hasn't changed. The Dynafit Speed Turn 2.0 does also use the same mounting pattern.
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6/12/2025
I am getting a new setup optimized for performance, not weight, although I would avoid weight that is unnecessary. I have a lightweight setup when I need to go light and fast. With that in mind, I have my eyes on DPS Pagoda 100 skis (thanks for the suggestion I got here, BTW). Now for the bindings, I am comparing Radical, Rotation, and possibly Ridge. I have skied 3 setups in the past with the original Radicals, and I have no complaints. I understand the "new" radicals are quite different from the original version. I wonder how much difference it would make. As for Rotation, I have heard that due to the flexibility of the toe pieces, it could be finicky to lock in the heal pins on a slope. In the backcountry, it's inevitable that sometimes we transition in a precarious location.
What are your expert opinions? Thanks.
What are your expert opinions? Thanks.
6/12/2025
Hi Deling, the current Radicals are more robust than older versions but there isn't much difference in ski feel. The Rotations feel the most solid with the gapless heel, which you pay for in added weight. Note, you can lock the toes to disable the rotation, which makes stepping into the heel easy (the pins will be lined up). You can then unlock when you are ready to ski (or not if you're in no-fall terrain). The Ridge is splitting the difference in ski feel with a 2mm heel gap, but with a noticeable weight savings. The toes are also the easiest to get into which can help in those precarious locations. Hope this helps!
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4/28/2025
Would you support the saying: light ski, heavy binding and the opposite alike?
How about zero g 85 and radicals? Or perhaps not...
We are talking about average weight people with serious skills.
How about zero g 85 and radicals? Or perhaps not...
We are talking about average weight people with serious skills.
4/28/2025
Hi Simon,
It's a complex question, and depends a lot on what your goals and specific needs are as a skier! In general, however, we have found that ski weight translates more consistently to downhill performance than binding weight, meaning that it may make sense to cut weight from your bindings before your skis if downhill performance is the goal. But there are too many variables to make a complete generalization! Email us at help@skimo.co if you'd like to discuss your options in depth.
It's a complex question, and depends a lot on what your goals and specific needs are as a skier! In general, however, we have found that ski weight translates more consistently to downhill performance than binding weight, meaning that it may make sense to cut weight from your bindings before your skis if downhill performance is the goal. But there are too many variables to make a complete generalization! Email us at help@skimo.co if you'd like to discuss your options in depth.
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2/15/2025
Can I put dynafit radical bindings on Salomon mountain 86 pro women’s ski? Looks like brakes are set too wide?
2/15/2025
Hi Kerry,
You can! The 92mm brake is a little wide, but still reasonable to use on an 86mm ski.
You can! The 92mm brake is a little wide, but still reasonable to use on an 86mm ski.
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1/30/2025
I recently purchased this binding and really like the way it skis. I do like to occasionally hit larger features and found I pre released on the release value of 8 on bigger features. Would it be better for the binding to run the release value at max 10 or lock the toes to prevent pre releases.
1/31/2025
Hi Jonas,
If you are finding that you are pre-releasing at an 8, we would recommend turning up the release a little bit until you stop pre-releasing, as far as is within your personal risk tolerance. We would not recommend locking the toes as that will disable your lateral release entirely, which could result in serious injury if one of your landings does not go to plan.
If you turn the release up to maximum and are still coming out, you may want to look into a binding with more elasticity and/or higher release values.
If you are finding that you are pre-releasing at an 8, we would recommend turning up the release a little bit until you stop pre-releasing, as far as is within your personal risk tolerance. We would not recommend locking the toes as that will disable your lateral release entirely, which could result in serious injury if one of your landings does not go to plan.
If you turn the release up to maximum and are still coming out, you may want to look into a binding with more elasticity and/or higher release values.
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12/30/2024
Will this binding work with my old Scarpa Spirit 4 Touring Boot (https://rebrand.ly/v04utv0)? Also, for a ski with dimensions 132-98-120, should I get the 100mm version?
12/30/2024
Thomas, those will work fine with the Radical. I'd go with the 100mm brakes.
12/30/2024
Great. Very helpful. Thanks a lot!
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2/11/2024
Hello,
I want to get my wife set up with some AT bindings, but also want to have the option of using them myself. Is there a binding that will allow for adjustment between our different boot sizes? (Looks like my Dynafit bindings only adjust by 25mm which isn't enough) She uses a 23.5 (US womens size 6) and I am in a 27.5 (US mens 10).
I want to get my wife set up with some AT bindings, but also want to have the option of using them myself. Is there a binding that will allow for adjustment between our different boot sizes? (Looks like my Dynafit bindings only adjust by 25mm which isn't enough) She uses a 23.5 (US womens size 6) and I am in a 27.5 (US mens 10).
2/11/2024
Hi Matt, there are a few bindings with 50mm of adjustment, but adjusting just the heel across those distances can leave your boot pretty far off the midsole mark. Best bet is an easy-to-adjust rental binding, please reach out to help@skimo.co for a couple options.
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2/10/2023
Will these bindings work with Salomon Mtn Summit Pro boots? I’ve read in dynafit’s literature that they only “guarantee” correct for with certain brands of boots, and I didn’t see Salomon on the list..
Thank you!
Thank you!
2/10/2023
*correct fit, is what I meant..
2/10/2023
Hi Rudy, Dynafit makes that "guarantee" for boots that use Dynafit inserts. Salomon didn't always use Dynafit-made boot inserts, but they do now, including the Summit series. Those boots work fine in the Radical ST.
2/10/2023
Awesome awesome thank you much!
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1/3/2022
I am interested in these bindings but have a 102 mm waist ski. I have some old dynafit bindings with ski brakes--would I be able to swap brakes over to these bindings?
1/3/2022
Kris- All of the Dynafit brakes/base plates are different between years, so it will depend on which exact binding you have now. We are slated to get more of these bindings with wider brakes very shortly. If you would like to know specifically send us some photos to Help@skimo.co and we can atke a look.
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12/27/2021
Do these bindings have forward pressure in the heel? In other words, gap or no gap?
Thanks in advance!
Thanks in advance!
12/27/2021
Hi Matt, the Radical ST uses a 5.5mm heel gap. The Rotation binding is Dynafit's signature gapless model.
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12/23/2021
Hi,
Can I stretch the 100mm to fit the waist of Black Diamond Helio Carbon 104 Skis? I see that you don't have the 100mm in stock.
Thanks.
Can I stretch the 100mm to fit the waist of Black Diamond Helio Carbon 104 Skis? I see that you don't have the 100mm in stock.
Thanks.
12/23/2021
Thanks for your question, Tom. The 100mm brake could be stretched to fit a 104mm underfoot ski. We're hopeful that we'll be getting the 100mm back into stock in the next few weeks.
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12/18/2020
Hi,
I'm trying to decide between the ST Radical and ST rotation bindings to mount on my new Backland 100s and ski w Dynafit Hoji boots in the Tahoe area. This will be exclusively a backcountry set up and will be skiing conservatively. I'd lean toward the lighter Radical binding; but, if you think the Rotation binding adds significant safety for my aging knees, etc., I'd go with the extra weight.
Thanks!
I'm trying to decide between the ST Radical and ST rotation bindings to mount on my new Backland 100s and ski w Dynafit Hoji boots in the Tahoe area. This will be exclusively a backcountry set up and will be skiing conservatively. I'd lean toward the lighter Radical binding; but, if you think the Rotation binding adds significant safety for my aging knees, etc., I'd go with the extra weight.
Thanks!
12/19/2020
Hi Tom,
The Dynafit ST Rotation is TUV certified, which is rarified air in the world of tech bindings. The elasticity in the heel and rotation in the toe piece provide an extra safety margin over the Dynafit ST Radical.
If safety is a paramount concern, I would recommend the Rotation over the Radical.
The Dynafit ST Rotation is TUV certified, which is rarified air in the world of tech bindings. The elasticity in the heel and rotation in the toe piece provide an extra safety margin over the Dynafit ST Radical.
If safety is a paramount concern, I would recommend the Rotation over the Radical.
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11/30/2020
I have a 95 mm wide ski under foot. Would you recommend the 92 or 100 mm?
11/30/2020
Thanks for your question, Randy! While either would work, the 100m wide wouldn't require any stretching. Either way, you'll be covered!
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11/6/2020
would le 92mm brakes work on a 98mm ski ?
11/6/2020
Clement, They would be able to work. Without bending they will be close, may just need a tiny bend.
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10/22/2020
I just picked up a pair of Black Crows Solis skis. Do you think this binding would work well with them? In an interview the Ski’s designer said “ if you fix bindings which are too supple at the back, the boot will tend to want to release and finally, won’t ski well because the binding is always on the move. This ski transmits a lot of energy so it is useless to associate it with floating bindings. ” Thoughts? Thanks!
10/22/2020
Hi Alex, it sounds like they don't recommend using tech bindings. The Solis is basically an alpine ski so I guess that makes sense (in Cham you can just step off the midi to go "ski mountaineering"). You could look at the Shift which is an alpine binding that has toe pins for the uphill.
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3/17/2020
I have been barraging you guys with questions.... sorry.
I want to replace my Vertical STs with something that has the nice flip-type heel lifters. I had thought about Pika, but you suggested the brake behavior is sketchy.
Occurs to me to just get Radical STs, and replace just the heel unit, so I'd have Vertical ST toes, Radical ST heels.
Any reason this won't work (with all the caveats about manufacturer warranty etc..)?
I want to replace my Vertical STs with something that has the nice flip-type heel lifters. I had thought about Pika, but you suggested the brake behavior is sketchy.
Occurs to me to just get Radical STs, and replace just the heel unit, so I'd have Vertical ST toes, Radical ST heels.
Any reason this won't work (with all the caveats about manufacturer warranty etc..)?
3/17/2020
Hi Eric, if you replace the whole baseplate + brake assembly as well as the heel towers, then that can work. As usual when mixing and matching, you may not be able to trust the release value indicators.
3/17/2020
Yep, that's the idea -- replace everything. Thanks.
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2/25/2020
Can you pls tell me what size binding I need for my Atomic Backland 85 158? Thanks!!
2/25/2020
92mm is the narrowest brake available for this binding, so that should work just fine for you unless you want to consider another binding or going brakeless!
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2/22/2020
Which size should I use on a pair of 106 K2 Waybacks, 100mm or 110mm?
2/22/2020
Ian, you could slightly bend the 100mm to work. But the 110 will be a better fit, just 2mm extra on each side.
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2/7/2020
I'm looking to put these on Voile Hyper Vectors (171 which are 94mm under foot). Will the 92mm brakes work?
2/8/2020
Hey Tony, that 92mm brake should work just fine for you, and you can bend the brake arms just a touch if you need to!
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