The Dynafit Speed Radical is the standard by which touring bindings are measured. Evolved from the tried and true TLT Speed, the binding is designed to be safer, easier to use, and support a wider range of boots sizes and release values. The skiability and precision control of the previous incarnation remain intact. If you are looking for a lightweight binding that gives you more adjustability and riser options than a race binding, the Speed Radical may be for you.
Power Towers on the toe pieces are easier to step into and offer protection from pre-release during a side impact.
Speed Step climbing bars enable you to change riser heights with a flick of a finger or pole, no heel rotation necessary.
Adjustable heel piece (up to 25mm) lets you step in with various size boots or loan them out to a friend with big feet.
Release values adjust between 4 and 10 for both lateral and vertical releases, so you can customize your injury prevention.
Made with forged 7075 aluminum, high-strength plastic, chromoly and stainless steel to ensure your skis stay attached.
Comes with optional leashes so you can make your rig resort legal when accessing the side-country.
Update 2015/16: All Speed Radicals now come with an anti-rotation mechanism that is mounted under the heel to prevent accidentally spinning into ski mode while skinning.
Update 2017/18: An additional refinforcement plate was installed under the heel roof. All of our stock is current with this update.
I've had 2 pairs of these (on Cho Oyus and Voile Vector BCs) with every iteration of the warranty replacement heels. The heels never stopped autorotating on steep side hills; that is not only inconvenient, but dangerous. Packed snow and ice builds up under the boot heel worse than any other binding I've had (Vertical ST, Radical ST, Superlite 2.O, Plum Guide & Yaks, and Kingpins). It was so bad I finall covered the bsl adjustment screw & track and plate screws with permanent silicone adhesive; that did help a lot; using Maxiglide, Armorall, silicone spray, waterprood grease, silicone paste, etc. did little. I disliked the flipping climbing aids--they always seemed to flip inconviently on their own. For a minimalist binding these are heavier than most of the competition. But they did work and worked fine when the snow wasn't deep or in a sintering mood.
Hi Andrew, thanks for the feedback. For what it's worth, in our experience the rotation issues were licked with the version that introduced the little nubbin that gets mounted under/off to the side of the heel. It would be hard to rotate accidentally over that!
The old classics, decently light for starting out and reliable workhorses. The unbreakable Dynafit toe piece, paired with adjustable release values, and multiple heel risers, can't go wrong with these.
Pushed these hard enough that the toe pins rounded off to such a degree I was worried about release from my toe while skiing, never actually released so perhaps not a problem.
As these things wear the heels begin to turn under the weight of your boot while skinning, slipping from walk into ski mode. This can be quite aggravating especially on steep icy sections, fixed by replacing the plastic bearing inside the heel tower, or my recommendation, mounting your skis with Maruelli anti-twist plates: https://skimo.co/maruelli-binding-parts. (Work wonders and lighten the binding up).
Hey Angus, thanks for reaching out! In the toe, no. In the heel, yes! We have a whole article dedicated to the hole patterns here! The heel should be able to pop into the old holes just fine, whereas the toe will be able to re-use two of the existing holes (you can choose front or back) and then you'll have to drill two other holes.
I bought a pair of these to throw on a pair of Atomic Tacoras for summer and early winter skiing. I also have a pair on my Voile V6s. So far I've had the chance to use 'em on perfect corn, slush, avalanche debris, and even some pencil/knife hard couloir snow, and they have kept me securely attached to my skis. No prereleases yet, they drive my old non-rockered skis well, and I think they are a great balance of weight, durability, and features. I also like the added heel anti-rotation stopper. Unless you are doing some regular resort skiing and need brakes, or dropping cliff bands and need some serious retention, look no further.
Do any of the current Dynafit bindings use the 5 hole mount? My 15 year old dynafit bindings are no longer passing safety checks, but I like my skis, wondering if I can just get new bindings that would fit in the same holes or whether I'm stuck looking for new skis too.
Hello, I have the fischer transalp 88 skis and transalp ts lite boots and am looking for a binding for tours and some back country skiing. I am not a racer, so weight is not a huge issue, although light is good.... with that said, would the dynafit speed radical be a good fit? Was also looking at superlight white, but it seems that it's only a half pound of weight shedded and costs $150 more, any other significant differences
Hi Sarah, the Speed Rad would be a decent option for that setup; it's fully featured and reliable. The Superlite would save you some grams at the cost of a fixed vertical release and no BSL adjustment (can't adjust for different boots).
Is skier weight a consideration with these at all, other than DIN setting? Should heavier skiers move towards the ST/FT? I like the leash concept and weight savings but am concerned with durability, drive-ability, etc.
Hi RMC, there is no published skier weight limit, and the latest iteration seems to be holding up well. The ST/FT 1.0s are the same construction so not any stronger, though the ST/FT 2.0s are noticeably beefed up. You could also check out the G3 ION LT 12 which is a bit beefier yet still light sans brakes.
I paired these with the Movement Sweet Apple skis for my girlfriend. Over two seasons, she has toured on them regularly and used them at the resort maybe 10 times with no issues at all. (She weighs 105 lbs and is not an aggressive skier.) They are not the absolute lightest, but the combination of weight, function and price is hard to beat. Another reason I chose these for her, and not a race binding, is that she needs a very low release setting, and these go down to 4. She skis them on a 4 or 5, and they have released when needed, without pre-releasing. Small people take note. The adjustable heel is also handy for boot changes without remounting, as happened when her F1 Evos were recalled.