Dynafit TLT Radical ST Binding

Priced: $421.14 - $499.95 Rated:   - 5 stars out of 5 by 7 reviews.
Oregon Mountain Community $421.14
15% off
Regularly: $499.95
Evo (2014) $424.96 - $499.95
14% off
Regularly: $499.95
Campsaver.com $429.95
14% off
Regularly: $499.95
Backcountry.com $429.95
14% off
Regularly: $499.95
USOutdoor.com (2013) $499.95
Eastern Mountain Sports (EMS) $499.95
Gearx $499.95
Berg's Ski Shop $499.95
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Dynafit TLT Radical ST Binding -
Long the purview of die-hard backcountry skiing enthusiasts, ski mountaineers and randonee racers, with the TLT Radical ST binding Dynafit has expanded their lineup to include a lightweight touring bindings that is more accessible to the rest of the skiing world. With redesigned heel and toe pieces, the TLT Radical ST prevents frustrating Dynafiddling through the use of Dynafit’s Side Towers, which streamline stepping in provide additional protection and strength from side impacts. Unlike traditional Dynafits, the TLT Radical ST heelpiece climbing lifts flip up instead of rotating, eliminating the need to poke and twist with your pole every time the slope angle changes. Aspiring and long-term backcountry skiers alike will fall in love with the freely pivoting and efficient touring motion and at a mere 531 grams these Dynafit bindings will make you want to hang up your old, bulky and clacking AT bindings. The TLT Radical ST is made from a tough 7075 forged aluminum chassis, along with CroMo steel, high strength plastic and stainless steel parts. For added safety, the adjustable DIN runs up to 10.


  • Integrated sliding Anti-Friction Device (AFD) in brake pad


  • Tour mode is accessed for all positions by rotating heel 1/4 turn clockwise. Height adjustment is done by flipping the Speed Step Climbing Bar up or down as needed. On the fly adjustments with a ski pole are simple and precise.


  • Frameless design means mounting can be optimized to suit boot size without limitations
  • Adjustable length +/- 12.5 mm
  • Slide-able heel allows you to gain or lose 12.5mm of length without remounting


  • Torx (steel) screws save weight and are ultra durable
  • Stopper with gliding plate provides better side release in the event of a spill
  • Release capacity 5-10 DIN
  • Uses Torx 20 screws instead of PoziDrive #3 screws
  • The six-millimeter plate under the toe aids turnability without sacrificing power transfer
  • Self-guiding wings allow for quick entry
  • Heel should only be rotated in clockwise direction.
  • We recommend a brake width equal to or at most 15 mm wider than the ski waist width.
  • A combination of forged aluminum, CrMo steel, stainless steel, and high-strength plastic provides plenty of strength while keeping overall weight low (531g)
  • TLT Radical system is quick and easier to step-in
  • Side Towers for quick binding entry and greater side impact resistance
  • Supplied with a 100 mm brake
  • Optimized eccentric cam
  • Alloy pivot post with polymer body and stainless steel heel pins
  • Speed Step heel-height adjustment system activates easily using your pole tip
  • Toe lever should be in locked position for skinning.
  • Additional 6 mm plate at the front
  • Four screw mounting pattern rather than the traditional 5 hole Dynafit pattern
  • Very light weight design that saves energy on the ascent
  • Jig/template optimized at the toe (just 4 screws instead of 5)
Berg's Ski Shop
The Updated TLT Radical ST now offers a DIN certified brake system for those who want a certified lightweight option at all North America ski resorts. The TLT Radical ST is a step up from the Vertical ST because of its wider platform, easy to use and it makes frameless system accessible to all skiing fans. With the Radical ST, there's little place for systems with frames.
Evo (2014)
The Dynafit TLT Radical ST Ski Bindings build on the reputation of the legendary Vertical ST with the addition of increased step-in ease, better resistance to lateral shock at the toe, and super simple flip-up climbing height adjustment that's a breeze with your ski poles. Dynafit veterans will adjust to the step-in mode immediately and love the flip-up climbing lifters; newcomers will wonder what all the fuss was about!


The Dynafit Radical ST Bindings are easy to use and functional. The feature side towers for quick binding entry and greater side impact resistance as well as the speed step climbing bar for steep ascents.

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.

Eastern Mountain Sports (EMS)
The Dynafit TLT Radical ST offers the genius of a frameless design to fit riders with all manner of boot sizes and ski choices.

German engineering at its finest. If efficient striding on the skin track is what you desire, then Dynafit bindings are the way for you, no question about it. Their frameless design saves you weight with every step, and with release settings from DIN 4-10, they'll hold your securely on the way back down too.

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Average Price History: Price History
Review RatingNumber of Reviews
Activity:Extended tour
Avg. Weight (Pair):1 lb. 3 oz.
Binding Compatibility:Tech (Dynafit)
Binding Type:Alpine Touring
Binding widths:92mm, 100mm, 110mm, 130mm
Brake Width:100mm
Climbing Bar:Speed Step climbing bar
DIN Range:4 - 10
DIN Release Capacity:4-10
Entry:Side Towers for quick binding entry and greater side impact resistance
Materials:7075 forged aluminum, CrMo steel, high-strength plastic, stainless steel
Plates:Additional 6 mm plate at the front
Snow Type:Mixed
Stopper:Stopper with gliding plate for excellent side release
Weight:2 lb 4 oz / 1062 g (pair)
Weight - Per Pair:531 g
Compare specifications to related products.

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Dynafit TLT Radical ST Binding Reviews:


First technical binding I've had and it is great. All the kinks reported earlier seem to have been taken care of. Also, never had a release problem (of the good or bad kind). Different levels for climbing are great. Use on K2 Waybacks with Scarpa Maestrales. Great combo. No problems with ice or other build up. Only negative comment is that the brakes could benefit from a little more angle. That might be a user error though.

Ben Smith at Backcountry.com on 09/09/2013

Works great at the resort too. Easier to step into than the previous generation. Also like the heel riser better. Biggest difference between these and a downhill binding seems to be the lack of wiggle room in these bindings. You're either in or out - there is no recovery like you may get in a traditional binding.

knanier at Backcountry.com on 08/22/2013

I got these bindings for my girlfriend and so far they have worked great. They are very lightweight and perform well both in the backcountry and in the resort. Easy to use tour-ski transition, and they work great with the Dynafit One Boot. Highly recommend this setup.

Noah Brautigam at Backcountry.com on 01/20/2014

Two years with no problems! Unfortunately, on the 4th day out on year three, the pins holding the break broke, the brake came off and the little plate (see replacement in photo) under the heel bracket went missing. Hope this isn't a sign of things to come.

Ben Smith at Backcountry.com on 12/28/2013

The self guided step in feature is a welcome addition vs the Vertical series.
I was a little nervous about the climbing/height adjustment design but it has held up after one season of use.
Dynafit bindings are still the best Tech binding around.

Stan M at Backcountry.com on 11/08/2013

I have used the fritschis blindings for two seasons and one major problem that I was facing was my turns...I thought is was me, but got new bindings ( Dynafit TLT Racdical ST Bindings) problem solved.

ronp46239 at Backcountry.com on 02/06/2014

Really nice randonee bindings.
Lightweight and solid is what these bindings deliver!
I love the dynafit crampon compatibility for when the going gets steep and icy.
Better that the any fritschis in my opinion.

Dalan3r at Backcountry.com on 11/15/2013