Dear Skimo,
What material makes up the plate that mounts the heel piece to the ski and the tower that rotates to transition between tour and ski modes? Is it brittle plastic like what is used in the Dynafit Radical or strong metal that I can count on while getting rad on the way down?
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.
**Please ensure the ski brakes you select fall between 15mm less to 2mm more in width compared to the ski underfoot.
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
3/9/2017
3/9/2017
Hi Rob, the base and shaft are metals. There is some plastic around the outer ring of the adjustment base, but all the force is on metal.
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2/10/2017
Hi, do you still have some Radical ST available? My girlfriend just bought a pair of 110 mm skis and is stumped to try to find a new pair of dynafits with brakes that will fit. 105 mm radical st 2.0s seem like the closest next best thing, but if you have a radical st in 110 mm I think that would be the ticket.
Thanks!
Thanks!
2/10/2017
Hi Nathan, unfortunately those are all gone, sorry. Yes the Rad 2s would be a good match. Or the Plum Guide 110s.
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11/29/2016
Do ALL of the Dynafit Vertical models have the same 5-hole toe piece mount? I picked up a pair of skis that unfortunately had the toe piece mounted twice, and now I can't mount ANY binding except what was there before, which was a pair of Verticals but I don't know the specific model. Thanks for any info you can pass along!
11/29/2016
Hey John! Yup, all of the Vertical model bindings have the 5 hole toe piece. Send me an email at help@skimo.co if you have any further questions about binding compatibility!
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11/11/2016
I just ordered 4frnt Aretha, 102 underfoot. What brake size would be best?
Thanks!
Thanks!
11/11/2016
Hey Caitlin! The 100mm brake will be fine. If you have any issues you can always bend the arms out just enough for it to clear upon deployment. The brakes will often times fit a ski up to 5mm wider than the manufacturer suggests with no problems.
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10/23/2016
Hey! My armada vjj's skis are 116 underfoot. What break size is best? The 100 sounds too small and the 130 too big??? Thanks!
10/24/2016
Hi Bri, there are some 110mm brakes available separately, but you may have to bend those out slightly. No 120s were made. The 130s will work OK.
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10/17/2016
Will 130mm brakes with Radical ST Binding be good choice on Chugach (107 mm waist) skis?
Should I look for 120mm brakes?
Thanks
Should I look for 120mm brakes?
Thanks
10/17/2016
Hi Vadim, 130 will overhang a bit more than ideal. The next size down is 110mm which you may still find somewhere. We also sell them separately under our listing for Dynafit brakes.
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9/26/2016
Can you remove the brakes entirely? I understand the Speed binding would be the model w/o brakes but I want this binding because of the plate under the front binding of which the Speed does not have. Thanks.
9/26/2016
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9/28/2015
Hi can I switch out the breakarms on the radical ST?
Thanks,
Blake
Thanks,
Blake
9/28/2015
Hi Blake, the arms aren't designed to be changed by themselves, though it is possible. Dynafit sells brake kits if you want to replace the whole base plate.
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7/24/2015
At 5'9" and 190 lbs, 298ish sole length, would the 10 din work for me? I usually set my dins at about a 9-11 depending on what I'm doing, so I'm a little concerned about maxing out the din. Any input..?
7/24/2015
Hi Rich, looks like you are fluctuating between type III & III+ skier settings for your size (provided you are between 10 & 49 yrs old). Given that, it's not ideal for you to hover near the maximum binding settings. While you could probably deal with it, a binding that goes up to 12 would give you a little more breathing room. Check out the Radical FT, Plum Guide, G3 Ion, or Fritschi Vipec.
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6/24/2015
What is the difference between the Radical ST and the Speed Radical?
6/24/2015
Hi Steve, mechanically the bindings are the virtually the same. The primary difference is the ST has brakes and the Speed Rad does not (it comes with leashes).
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5/10/2015
I am looking at buying and mounting these on the K2 Comeback 104. Would I be able to squeeze the 100mm brake on there or would I have to make the jump to 110mm? I'm concerned that the 110 may drag on turns...
5/10/2015
Hi Nick, the brakes migrate inwards on top of the ski as they are being retracted, so you shouldn't have any issue with drag. Depending on your boot sole length, the ski may widen enough to require bending of the 100s which can compromise the stopping ability. It's probably possible to get those to work, but not necessary.
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I use these bindings as well as the Speed Radical. Upgrading to the radical was inspired, in part, by the fact that the brakes on ST bindings seem to be pretty mediocre, even with mid-fat (90mm) skis. I've had to chase a ski more than once when it glided down despite having the brakes extended. I still use these (ST) for touring with skinnier skis, especially inbounds.
Comment on this review:
6/12/2014
I have 88mm waist G3 Zenocide skis, I presume I should be using a 92mm brake size if using the Radical ST, is this correct?
Also are the Radical ST with 92mm brake you are selling the 2013/2014 models or earlier?
Thanks,
Also are the Radical ST with 92mm brake you are selling the 2013/2014 models or earlier?
Thanks,
6/12/2014
Hi Billy, yes, the 92mm would be the best brake size for the 88's. All the Radicals we have in stock are from this season with the new spring in the heels that allow the housing to slide backward.
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5/25/2014
Hi,
I have "K2 Shreditor 112 Skis - Men's - 2014" with the Specs:Tip/Waist/Tail Widths: 135/112/130.
Just wondering which size of the brake width should I buy from this DYNAFIT RADICAL ST BINDING ?
Also, can this "brake" be removable ?
Thank you !
I have "K2 Shreditor 112 Skis - Men's - 2014" with the Specs:Tip/Waist/Tail Widths: 135/112/130.
Just wondering which size of the brake width should I buy from this DYNAFIT RADICAL ST BINDING ?
Also, can this "brake" be removable ?
Thank you !
5/29/2014
Hi Mac. There are a couple millimeters of wiggle room with the widths, so the 110mm brakes should work. For comparison, DPS recommends the 110mm brakes for their 112mm skis. The 130s would also work, but hang over the edges a bit more.
The brakes aren't designed to be removed but can be cut off with some effort. Note there is an anti-rotation feature built into the brake mechanism that prevents the binding from rotating into ski mode when skinning. Removing the whole brake will disable this feature.
The brakes aren't designed to be removed but can be cut off with some effort. Note there is an anti-rotation feature built into the brake mechanism that prevents the binding from rotating into ski mode when skinning. Removing the whole brake will disable this feature.
Answer this question:
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