I still remember the first time I clicked into a pair of black diamond tele bindings, mostly because I immediately face-planted in the lodge parking lot. It wasn't the binding's fault—I just hadn't realized how much more "active" they felt compared to the floppy old leather-strap setups I'd been messing around with. For a long time, if you saw someone dropping knees in the backcountry, there was a very high chance they were riding on something with the BD diamond logo on it.
Even though the gear landscape has changed a ton over the last decade, there's a certain nostalgia and respect that still follows these bindings. Whether you're a die-hard 75mm loyalist or someone hunting through a used gear swap for a reliable setup, understanding what made these things special is part of the telemark rite of passage.
The Era of the O1 and O2
If you were skiing in the mid-2000s, the O1 and O2 models were basically the gold standard. Black Diamond didn't just make a binding; they made a statement about how a telemark turn should feel. Before these came along, a lot of bindings felt a bit disconnected. You'd pull up on your heel, and there was this weird dead zone before the tension kicked in.
The black diamond tele bindings changed that with their under-the-boot cable routing. By putting the pivot point and the tension source underneath your foot rather than just at the sides, they created a much more "active" feel. This meant the second you started to lift your heel, the ski responded. It made for a more powerful turn, which was necessary as skis started getting wider and heavier.
The O2 was the resort workhorse. It was a solid, dependable piece of metal and plastic that could take a beating. Then came the O1, which added a free-pivot touring mode. Back then, trying to skin uphill in a traditional cable binding was like doing a calf raise with every single step. The O1's toggle switch was a game-changer for backcountry enthusiasts, allowing the whole toe piece to pivot freely.
Finding the Right Stiffness
One of the things I always appreciated about black diamond tele bindings was how they let you customize the "flavor" of your turn. They used these interchangeable color-coded cartridges that housed the springs.
You had choices: FreeFlex (white), MidStiff (red), and Ridiculous Stiff (black). I remember trying the Ridiculous Stiff cartridges once. They weren't lying about the name. It felt like my heels were bolted to the floor. If you weren't driving your knees forward with absolute conviction, those springs would just stand you right back up.
Most people settled on the MidStiff. It was the "Goldilocks" zone—enough resistance to carve on hardpack but enough give to let you really sink into a deep powder turn without feeling like you were fighting a mechanical monster.
Why 75mm Still Has a Following
You can't talk about black diamond tele bindings without talking about the 75mm "duckbill" boot. Nowadays, the industry has largely shifted toward NTN (New Telemark Norm) systems, which offer more lateral stability and a step-in feature. But there's a specific feel to a 75mm setup that NTN just hasn't perfectly replicated.
There's a certain "surfiness" to an O1 or O2 binding. Because the cable wraps around the heel, the pressure is distributed differently. It feels a bit more organic, a bit more connected to the snow. For many of us, the shift to NTN felt a bit too much like alpine skiing. We wanted the struggle; we wanted that weird, soulful flex that only a cable binding provides.
Also, let's be honest: 75mm gear is often cheaper and lasts forever. I know guys who are still rocking the same black diamond tele bindings they bought in 2012. Aside from maybe replacing a cable or a spring cartridge every few years, they just don't quit.
The Maintenance Game
If you're lucky enough to still have a pair of these on your rock skis, you know they require a little bit of love. One of the quirks of black diamond tele bindings was the tendency for the screws to work their way loose if they weren't mounted with plenty of waterproof glue.
The cables also needed an occasional check. Since they were under constant tension and exposed to the elements, you'd sometimes see some fraying near the pivot points. I always carried a spare cable in my pack, though, in all my years of skiing them, I only had one actually snap on me—and of course, it was at the furthest point from the trailhead.
The "knee to ski" crowd also had to watch out for the toe plates. If you're a really aggressive skier who drops your back knee until it literally touches the topsheet, you're putting a massive amount of torque on those bindings. But even then, the BD stuff was built like a tank.
The Shift in the Market
It's a bit bittersweet that Black Diamond eventually moved away from producing these bindings. As the market moved toward more specialized backcountry tech and the NTN system took over the resort scene, the classic 75mm cable binding started to look like a relic of the past.
However, the legacy of the black diamond tele bindings lives on in the used market. You'll see them on eBay or at local ski swaps, often attached to a pair of old Karhu or T-Roc skis. For someone looking to get into telemark skiing without dropping $1,500 on a brand-new setup, a used pair of O1s is still a fantastic way to learn.
They teach you technique. Because they aren't as stiff or "cheaty" as some modern bindings, you really have to learn how to balance your weight between your feet. If you can make a beautiful turn on a pair of old BD O2s, you can ski on anything.
Final Thoughts on a Classic
At the end of the day, black diamond tele bindings represent a specific era of skiing where things were a little more DIY and a little less polished. They weren't perfect—they could be heavy, and the "tele-toe" was a real thing if you didn't keep your boots tight—but they were honest.
They did exactly what they were supposed to do: they held your toe to the ski and gave you just enough resistance to feel the soul of the mountain. Whether you're still clicking into them every weekend or you've got a pair gathering dust in the garage, you have to respect the engineering. They helped define what modern telemark skiing felt like, and for a lot of us, they'll always be the benchmark for a "real" tele binding.
If you happen to find a pair in good condition, grab them. Even if you don't use them every day, having a piece of telemark history under your boots is a great reminder of why we started dropping knees in the first place. It's about the flow, the rhythm, and that slight bit of chaos that comes from having your heels free. And nothing captures that spirit quite like a pair of old-school Black Diamonds.