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  • Dynafit - TLT Radical ST Binding -

Dynafit TLT Radical ST Binding

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41 Reviews


The name might be straight from the '80s, but the tech is definitely 21st century.

Designed with a 100mm brake and gliding heel plate for improved releasability, the Dynafit TLT Radical ST Binding excels at backcountry touring and ski-mountaineering adventures.
  • A combination of forged aluminum, CrMo steel, stainless steel, and high-strength plastic provides plenty of strength while keeping overall weight low (531g)
  • The six-millimeter plate under the toe aids turnability without sacrificing power transfer
  • Self-guiding wings allow for quick entry
  • Speed Step heel-height adjustment system activates easily using your pole tip
  • Slide-able heel allows you to gain or lose 12.5mm of length without remounting
  • Stopper with gliding plate provides better side release in the event of a spill
  • Torx (steel) screws save weight and are ultra durable
  • Item #DNF0067

Tech Specs

forged 7075 aluminum, CrMo steel, stainless steel, high-strength plastic
Release Rating
4 - 10
Boot Compatibility
Brake Width
92 mm, 100 mm, 110 mm, 130 mm
Brakes Included
Heel Elevators
Claimed Weight
[pair] 2 lb 5 oz
Recommended Use
alpine touring, ski mountaineering
Manufacturer Warranty
2 years

Tech Specs

  • Reviews
  • Q & A

What do you think about this product?

Have questions about this product?

So far so good

  • Familiarity: I've put it through the wringer

I've had these mounted on my Dynastar Cham 107 High Mountains for all of last season and haven't had any issues with them. I finally took the plunge on these after a couple years of touring in Marker Dukes and the change is incredible. The weight savings over a frame style binding are incredible and really make a difference in how fast and long you can tour for. These are easy enough to mount and to get used to using, although it is a bit of a change over traditional alpine binders.

Being a bigger guy (220# / 6'1") I was a little concerned about the durability and power of these bindings, but I've been pleasantly surprised. I skied on these more than any of my other skis last winter, including several days at the resort in thoroughly mediocre conditions and have not had any concerns with over skiing these or concerns about their durability. The only time I had a somewhat surprising release was when I (somewhat lightly) hooked a log in the trees. Not sure if my alpine binders would have released on that one, but I was fine with the toe popping open on my Dynafits (I didn't have the toe locked up)

When I first started skiing these I did notice a bit of a difference in how these ski vs. alpine binders, but I think the biggest single difference is that your skis feel a LOT lighter with Dynafits vs. alpine binders. Not necessarily a good/bad feel to them, just different

These are chill.

  • Familiarity: I've put it through the wringer

A great, light weight AT binding. They haven't popped on me unexpectedly.

I've been most happy with them during the ascent. After a little practice, switching between the different height adjustments in the heel is a breeze. Absolute climbing machines.

Less Weight = Faster Turns

  • Familiarity: I've used it several times

Some great feedback from Andrew W. out in Colorado:

"The Dynafit TLT Radical ST Bindings bindings are great in so many ways. First, the weight difference: I went from an old pair of Marker Baron's, and the weight difference was huge. I have noticed no difference in the performance, and I love how lighter my skis are, especially in the thick and heavy snow, in steep trees. Second, less moving parts: With the Dynafits, there are less moving parts, and less places for ice and wet snow to jam into. Getting in and out of the bindings, as well as switching modes is quick and easy. Third, peformance: I don't jump cliffs, but I ski everything else. I was originally concerned about performance going to such a small binding. However, I have noticed no difference, other than the weight. And less weight means faster turns.

Two minor downsides: First, you can get a false positive when engaging the binding. So, you just want to be careful so your ski doesn't drop in before you do. Second, the "breaks" are disengaged when in uphill mode. I don't consider this a show-stopper, but just something you might want to know. However, for both of these issues, I just took two old leashes from my tele-days, and keep the boot and ski connected in the event I might have concern. "

Any questions about Dynafit or other touring bindings:

Climbing Machines!

  • Familiarity: I've put it through the wringer

I have spent too much time touring with Fritchis. After skiing some steep spring snow this review will focus on the uphill portion of the product performance. First of all, if you are concerned about bump skiing or lift service skiing stop reading and head to the saloman or marker page. If you are into lightweight and a serious improvement in skinning uphill performance this is your binding. Wow! is my first reaction. I flat out crushed some long tours in central colorado on both spring and cold snow surfaces. I was amazed at how steep I could skin and Z-turn up slopes. Purely pleasant and fun. Much better than my Fritchis. Drawbacks: The fritchis were easier to get in and out of. They are easier to switch back and forth from ski and walk mode. So what. I am selling the fritchis.

Climbing Machines!

I am so in love!

  • Familiarity: I've put it through the wringer

They are light weight and durable! I have put many days on these bindings in the back country and I couldn't be happier. I am a 150lb built female and I consider myself an aggressive skier and the 4-10 din setting is perfect. I haven't done any crazy cliffs, I have done some small jumps and drops and they have held up really well. I only had one miner fall this season and they remained clipped in which was fine, it was weird snow and I wasn't going fast. I have had no problems skinning with them so far and I am excited for more spring corn. I highly recommend these bindings!

Works great. Super light but solid!

  • Familiarity: I've used it several times

Changed from a Salomon Guardian to these. What a difference in weight. I'm a pretty aggressive skier but weigh only ~160 lbs so the binding feels really solid (the guardian was overkill). I also bit it pretty hard at ~40mph and the binding released very injuries! I mounted it myself with a template on from the web and the torx screws helped make this easy. I'm sold, and just picked up another set for my wife.

great binding for all around touring

  • Familiarity: I've put it through the wringer

I converted to Dynafit from Fritschi. So far this season, I'll bet I have roughly 40 days on them. So far, they're great! I started out on a pair of freeride pros, which I loved until I broke the torsion plate. I'll admit I was suspicious of the light construction. However, after several long tours I can't imagine riding on anything else. DIN settings on the STs range from 4-10, which is perfect for most unless your sending mondo cliffs on a regular basis. So far, my only gripes are my boots seem to pop right out much too easily while in climbing mode (even with the tab locked in). That and the fact that the brakes don't seem to be very effective. That is one of several features I miss about my Fritschis. These brakes tend to no be very effective in softer snow. Other than a busted Anti-Friction device which may or may not have been my fault, these binding have operated flawlessly. Definitely worth the hefty price tag if you want to shave some weight and save your legs for some downhill shredding

great binding for all around touring

50 Shades has nothing on these bindings

  • Familiarity: I've put it through the wringer

Perfect set-up for all around touring and ski-mountaineering. I have also had about 40 days in them this year. Lightweight, easy to use, and bulletproof - defines classic design. The 10 Din also means you can shred some descent stuff without any (or at least) much fear of popping your bindings. The only downside is the cumbersome transition from ski to skin mode - you have to come out of the binding. For extra security in steep or no-fall terrain I have also found that locking the toes in the "up" or skin mode gives some added piece of mind.

50 Shades has nothing on these bindings

Lightweight, robust, and versatile.

  • Familiarity: I've put it through the wringer

I have skied about 40 days in them and I'm getting a new pair for my wife's skis. Radical is perfect if you are looking for lightweight bindings without sacrificing downhill performance.
They are a nice balance for an alpine setting. The DIN setting of 4-10 is sufficient for even a big aggressive skier unless you jump off cliffs regularly. They are slightly heavier than the Speed version but I like the fact that they come with brakes, which gives me some peace of mind when transitioning in a tight and slant spot. I had skied in a Fritschi binding for a few seasons before and when I first converted, I was a little suspicion about the downhill performance. That suspicion has been completely eliminated after a few runs.

Feels safer than the verticals

    I am definitely sold on dynafits! But after 5 years on the verticals I am so grateful I finally coughed up the cash for the radicals. I can now easily and very QUICKLY flick between riser levels, instead of fumbling around and awkwardly bending down like I had to do with the verticals. The one drawback I found was (luckily) on the first day I got them mounted and was trying them out in-bounds. Somebody next to me on the chairlift knocked me down when we were unloading, and one of them popped off. Come to find out I could make both of them pop off easily by lifting my leg to the side and kicking down on the inside edge of the ski against the ground... with the din set to 8! I readjusted all the dins to 10 (learning in the process that each binding has 2 separate din settings), and the problem reduced. But now I'm a bit nervous that they won't come off when I would want them too. Overall, love these bindings, they were worth every penny!

    Ease and lightweight

    • Familiarity: I've put it through the wringer

    Great touring binding. I've used these for the past year and they have held up well. I've hit cliffs, jumps, and skied hard on these and have been pleasantly surprised with the durability and feel of these. While hitting jumps the heel piece has popped off a couple of times and I can't quite tell if they popped off because of landing too far forward or if they popped off and caused me to fall forward. The toe piece has never come off during a fall, however.

    This is the first true lightweight touring binding that I have owned and can now say that I doubt I will go back to a heavier set up. Easy to use, quick on the changeover, and a great binding over all. Love hiking with a lighter set up!

    Standard Dynafit

    • Familiarity: I've put it through the wringer

    Lightweight and easy to use. We've used Dynafits for years and still like them. The new flip heel lifts are easier to use the the old twist style but miss the ski pole turn to ski mode.

    radical bindings

      if you find yourself carrying a heavy pack and hauling a sled full of boxed wine several miles to a yurt, you probably don't want a heavy touring setup... These are awesome - VERY lightweight, sturdy, and simple to use (coming from someone who had previously only been on downhill bindings). The two heel risers can be flipped up and back with your ski pole, and you can switch from walk to ski mode without taking off your skis (although this requires a certain level of coordination...) I'm using these with Dynafit boots, and I haven't had any issues with the pins connecting to the toe piece so far. From a downhill perspective, I've felt confident skiing these for everything I'd ski with my resort bindings. Awesome bindings!

      radical bindings

      Go Everywhere

      I have never had a problem with Dynafit bindings, and have actually been pleasantly surprised by their toughness. That is not to say they are indestructible. I have seen Dynafits fall apart and the resulting walk out can be ugly.

      But hey, what's lighter than a Dynafit?

      Half a Dynafit!

      Go Everywhere

      It's Dynafit, the gold standard

      • Familiarity: I've used it several times

      These are awesome, plain and simple. These things tour great and give you all the confidence on the downhill. The gold standard in tech binders. Buy with confidence. Mounted on 180 Praxis Backcountry.

      It's Dynafit, the gold standard

      Backcountry Beauties

      • Familiarity: I've put it through the wringer

      The tech binding revolution all started with Dynafit innovation and this binder keeps you secured to your skis like none other. The self guiding toe pins help reduce the "Dynafit Dance" while clicking in, and the construction is rock solid. The newer design of the uni-directional rotating heel and improved heel-height adjustments are simple to use. Using the grip of your pole you can easily flip up the heel-height for steeper terrain. The release lever on the toe can be completely locked out for no-fall scenarios. The toe pins are pretty good about cleaning themselves of ice, but be sure to double check the toe connection in heavy snow conditions. I have mixed opinions on the brakes, but they work well. For skiers who like to leave the resort gates and do some yo-yo backcountry laps, having a brake is appreciated. For super long tours, reducing the weight and going with the brakeless Speed Radical would be a good option. Just make sure you use that leash. In all, I have had great experiences with this lightweight AT binding and would recommend it for any skier looking to lighten up their backcountry set up.

      Backcountry Beauties

      Prefer the older Vertical ST

      • Familiarity: I've put it through the wringer

      I have both the older Vertical ST and these current Radical ST bindings. While these are good, I prefer the older model.

      There were many good improvements made to the toe piece in the Radical, but they don't make up for bad "improvements" in the heel risers. The new Radical heel assembly seems better at first, super easy to flick the risers up/down with your ski pole instead of having to rotate the whole heel assembly to adjust the angle. But, it can be really sketchy and scary to try to switch from Skin to Ski mode in a steep exposed place. With the new Radical heel piece you have to bend down and use a lot of hand torque to flip the heel into Ski Mode, or take your skis off. Not cool to do when your in a sketchy spot and wearing a pack. This is where the Vertical heel shines, you just stick your ski pole in and flick, much easier to keep one's balance.

      Many people complain that the Vertical heel unit was difficult to rotate to change heel riser settings. I found it took me 2-3 days, and then I had it dialed and it took just a quick pole flick, and I could even do it in the dark during dawn patrols.

      Also, The Radical binding has a noticeably increased ramp angle. The Verticals don't put you on your toes as much. Not a huge deal, but noticeable in globbed up or re-frozen snow for me.

      I keep my Radicals on the skis I use more for resort dawn patrols and mellower backcountry, because the switch from skin to ski mode is easy. The skis I take to more 'mountaineery' places have the Verticals on them.

      Just for a matter of perspective, I feel the exact opposite. I toured with the verticals for about 5 years, and could never figure out to switch in between certain heights without awkwardly bending down to twist it. This was really dangerous in certain spots and in certain conditions!!! I recently got the radical ST's and have taken them out on 4 overnight tours in steep terrain. Being able to flick to a higher/lower rise while in dangerous terrain (which I do frequently while touring) is amazing! Also, I very rarely switch from tour to ski mode in dangerous terrain, I usually am on a ridge, or can simply find a slightly better spot, so switching to ski mode without bending over has never been an issue.

      One other advantage of the Vertical ST (I have three sets!) is you can change the brake width easily when mounting on a different pair of skis.. Just buy a set of wider brakes, easy to mount on the base plate with no special tools.
      Also with the Verticals you can easily remove the brakes. Just take the nylon heel unit off the baseplate/post, then remove the brakes for a light weight tour.
      But I will try a set of Radicals next season..
      This winter I toured a lot with a friend on the new Radicals and I envied how easily he could change his heel riser heights, while I struggled to rotate my Vertical heel piece.

      Huge improvement over frame bindings

      • Familiarity: I've put it through the wringer

      This season I put on my big boy pants and upgraded from Fritschis to Dynafit Radicals, and it was a world of difference. Just as everyone says, all of the sudden you're not lifting your entire binding with every step.

      What I like:


      *not a frame binding - tech toe is way more efficient

      *easy to step in

      *easy to use heel risers

      What I don't like:

      *release is kinda hit or miss... early on I had some early release, but raising the release setting fixed that. But I still feel like the lateral toe release isn't as good as it could be

      *brakes are functionally worthless. Twice I've released from the ski only to watch it continue on down the slope with the brakes scratching little grooves in the powder, or skittering on hardpack

      For my new pair of skis, I bought a pair of Speed Radicals instead with an aftermarket leash fuse (for release in avalanche), so I save weight, and don't have to count on the worthless brakes.


      • Familiarity: I've put it through the wringer

      It didn?t dawn on me to every try a tech binding setup. I had used the Marker Barron and Tyrolia Adrenaline and figured those were all you needed for a good day in the Backcountry. My buddy then broke it down for me. ?Alyssa, think about how much extra weight you have to move uphill with a heavier binding. Multiply the binding weight times the amount of steps you will take, see how your energy will be on longer tours? Hmm?that got me thinking and If I wanted to take my AT game up a notch, would have to consider a more technical and lightweight binding.

      This brings me to where I am today writing this review. I have zero regrets on purchasing TLT Radical bindings. They have done nothing but amazing things for my way up and down the mountain. They are substantially ligher than my prior setup, 6lbs to be exact. The heel lift feature is easy to adjust with just the flick of a pole. Struggle free transition from tour to downhill mode (very easy to swap with skis attached) These things are durable and stay on your feet even with some aggressive skiing. Ripped around snowbird on these and have taken some mellow falls and they have held strong. Highly recommended bindings if you are looking for a techy AT setup!

      These were everything I needed for my Yurt trip in the Pioneer mountains in late march. A 5 mile tour into off the grid powder heaven!

      Unanswered Question

      I got the radical ST with the 92mm brake as a gift, but my skis are 108mm underfoot. Is it possible to mount them without the brake? Is the brake difficult to remove?

      Thanks Matthew Pizza for answering my question: Hi, I wanted to know if the mounting screw points are identical on the Radical FT as the ST (not referring to 2.0 versions). I had Radical FT bindings on a pair of skis but want to put ST on them now. Thanks."

      How about compared to the 2.0 versions? Is it the same mounting points?

      Hi, I wanted to know if the mounting screw points are identical on the Radical FT as the ST (not referring to 2.0 versions). I had Radical FT bindings on a pair of skis but want to put ST on them now. Thanks.

      So I want to adjust the length to fit new boots... What exactly is this? Most other picture I've seen, people have a screw of some sort. I appear to have a rounded off knob thing that doesn't seem too adjustment friendly.

      are these good enough for 107 width skis (ie gotomas). and what width brake. or is it better to go width the ft's at a certain width.

      how would these bindings (brakes) hold up on the Black diamond Megawatt skies? what other bindings work well with those skies As well?

      Hey Logan,

      The Dynafit TLT Radical ST Bindings in the 130 mm brake width would be a great choice for the Black Diamond Megawatts. If you want to go even lighter then check out the Carbon Megawatts (Item # BLD007I). You could also go with the Marker Kingpins or the Dynafit Beasts (heel modification required) if you are looking for a more aggressive binding. Feel free to contact me directly with any further questions on this or other ski bindings.

      Could I get away with the 92mm brakes if my skis are 95 under foot?

      Hey Matthew,

      The 92 mm brake will work great for your 95 mm wide skis. You can safely bend a ski break up to 6 mm to fit around a ski, at least that is the ski industry standard. Feel free to contact me directly with more questions about the Dynafit TLT Radical ST or other ski bindings.

      I am wondering which Dynafit TLT Radical ST binding (breaks)would work best for my new Salomon Q 103 Stella's?

      if I have G3 Cakes that are 100 underfoot, should I get brakes that are 100 or 110 wide? (Specs 132-100-123)

      I've got a Manaslu with 95 mm under foot. Is the 110 mm wide brake too wide?

      This may be a silly question but will the 110mm width be suitable for Voile V8s in the 165cm length (which have 107mm underfoot)? Thanks.

      Unanswered Question

      I got new Volkl Two's, 124 mm underfoot in one hand, and a pair of Radical ST on the other.

      So question one is: is it possible to replace for the wider 130 mm brakes?

      And question two: will the ST work right in the 124 skis? I am 181 cm - 90 kg (sorry for metric), not agressive skier. I will be skiing maritime (Chile) powder, tracked or wet deep, and some breakable crust. I could use alpine bindings, but got these at home and it'd be a plus to use them to reach "that remaining line".

      What gets me to think twice is I've got several preleases on previous Gotamas, including the one that ultimately made me shelf the ST's. In favor now is I'll be hitting almost no ice or badly hard snow with these boards.

      Anybody have any luck getting any kind of service from dynafit after the warranty has run out. My bindings are 3 years old and one of the heel units came apart out in the back country. Obviously a manufacturing defect as I put very little stress on this binding as I am only 150 lbs. Back country was no help at all and the dynafit company was even worse.

      Unanswered Question

      Would it be better to just get skis that aren't so wide? I can't seem to find any bindings that are 113 mm because isn't it ideal to have onesthat are the exact width of your skiis? Is bending the break the only way around this for skis that wide? I'm just getting into backcountry skiing and I'm trying to figure out the best setup.

      Will the bindings fit on salmon q-115 skis 178 cm 113 ski waist?

      Would these bindings fit the Scarpa freedom sl alpine touring boot?

      My skis have a 95 mm waist. Should I purchase a 92 or 100 mm brake?


      You have a choice to make here. You would be perfectly fine getting a 92mm and bending the brakes to fit over the edge of the skis. The 100mm would also be a good fit. 5mm extra is not a lot of space for drag to occur and be dangerous. If you might put these bindings on fatter skis around 100mm on a later year then i would get the 100mm. If not, they you can bend the 95mm size. :D

      Planning to put these on the Huascaran 186 which is 114 mm under foot. Should I go for the 110 mm stopper and bend some 2 mm on each side, or better the 130 mm stopper leaving me approx 8 mm on each side sticking out...?

      Thnks! / Andy

      what is the difference between these and the TLT speed radicals? is it just a choice between brakes and leashes or is there more going on here in terms of release mechanism?

      Best Answer

      So the big difference is of course brakes and leashes. In terms of release mechanism there is not much difference. The other big difference is the ramp angle.The TLT Radical ST has a plastic plate which gives it a smaller ramp angle by 2.10mm. The TLT has a more neutral stance.