REASONS TO BUY
Light
Simple
Proven
REASONS TO AVOID
Limited feature set
Sticky heel flap
ATK Trofeo Review
Sturdy skimo race bindings that can readily be pressed into all-around backcountry use
Credit: Black Diamond
Price: $500 List
By Jediah Porter ⋅ Review Editor ⋅ Nov 8, 2022
Our Verdict
The ATK Trofeo follows what is proving to be a pretty “standard” formula for sturdy skimo race bindings. Across all the brands, standard skimo race bindings are all pretty darn similar. You get a mostly-metal toe piece with a locking lever and a heel piece mounted at a fixed length and that spins in place for release and mode change. You get a flap to cover the pins for uphill riser mode. All this, in this case and across the market weighs somewhere around 140-160 grams per foot. Differences between the different brands are nonexistent to very subtle.
Editor's Note: We tested the ATK Trofeo, mounted to wide powder skis, through the entire 2021-22 ski season. At the time it was sold as the “Black Diamond Helio 145”. It is currently sold, and described here, as the Trofeo, but a keen eye will note that our photos have Black Diamond branding.
Compare to Similar Products
 This Product
ATK Trofeo | |||||
|---|---|---|---|---|---|
| Awards |  Best Bang for the Buck | ||||
| Price | $500 List | $445 List $438.95 at Backcountry | $430 List | $490 List $489.95 at Backcountry | $280 List $279.95 at Amazon |
Overall Score  |
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| Star Rating | |||||
| Bottom Line | Check these out if race-style bindings in the backcountry are an idea that piques your interest | For moderate backcountry skiing, these bindings could be just the ultralight ticket you need | We like the basic, simple design and included features. However, we didn't like the movement within the binding | Lightweight bindings with important adjustments for length and release value | An affordable tech binding that has seen iterative improvements over the decades, yet remains reliable and highly durable |
| Rating Categories | ATK Trofeo | Plum R170 | Dynafit Seven Summits+ | Plum Oazo 8 | Dynafit Speed Turn |
| Weight (35%) | |||||
| Downhill Performance (25%) | |||||
| Touring Performance (20%) | |||||
| Ease of Use (15%) | |||||
| Construction Quality (5%) | |||||
| Specs | ATK Trofeo | Plum R170 | Dynafit Seven Summits+ | Plum Oazo 8 | Dynafit Speed Turn |
| Weight (pounds for pair) | 0.73 | 0.88 | 1.76 | 1.04 | 1.61 |
| Release Value Range | 1 to 10 | 8 Fixed | 4 to 10 | 4 to 10 | 4 to 10 |
| Brakes? | No | No | Yes | Optional | No |
| Brake Width Options | N/A | N/A | 98, 110, 120 mm | 80, 90, 100, 110 mm | N/A |
| Weight of one binding and screws. Lightest possible configuration w/o brakes (in grams) | 166 | 199 | 325 | 237 | 364.5 |
| Weight of 2 bindings Multiple options are noted where we have tested multiple options. (in grams) | 331 | 398 | 800 (650 without brakes) | 474 | 729 |
| Stack height: average of toe and heel pin height (in mm) | 31 | 34 | 40.5 | 34 | 37.5 |
| Toe/heel delta: difference in height between heel pins and toe pins (in mm) | 1 | 4 | 13 | 3 | 17 |
| Meets ISO/DIN Standard? | No | Yes | No | Yes | Yes |
| Ski Crampon compatible? | Yes. "Standard" style. Not all crampons will be cross-compatible | With aftermarket part. Best with Plum brand. "Standard" Dynafit/B&D style ski crampons can be lightly filed to work. | Yes. "Standard" style. Not all crampons will be cross-compatible | Yes. "Standard" style. Not all crampons will be cross-compatible | Yes. "Standard" style. Not all crampons will be cross-compatible |
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Our Analysis and Test Results
The ATK Trofeo is a long-standing design only recently more available in the United States. It is reliable and simple. It is also caught up in some branding and rebranding situations that lend confusion to the shopper's landscape. The pair we tested, for instance, were branded by Black Diamond but are available now as the ATK Trofeo.
Performance Comparison
For mellow ski touring in incredible locations (here, Alaska) the ATK Trofeo's weight savings is well worth the compromise in downhill performance.
Credit: Jediah Porter
Weight
Our tested ATK Trofeo bindings, including the mounting screws, weighed 166 grams per foot. Note that weights are often cited without screws. One could argue that screws should be included because bindings always require screws. Why not include them, then? One could use the same argument on the other side. “All bindings use screws. Their weight is pretty standard”. Tipping the balance of this somewhat pointless argument, though, is the fact that not all bindings use the same number of screws. For this reason, we include the screws in our weight citations.
The ATK Trofeo is light. For what it does, it isn't the lightest and one can now get significantly more performance for nearly the same weight among other products. Nonetheless, we are talking differences of tens of grams. The ice you didn't chip off at the last transition definitely weighs more than the differences we are talking about.
Pairing tiny bindings with huge skis isn't super common, but there is a great deal of logic here. Big skis should be confined to powder skiing. Powder skiing requires very little downhill performance sophistication from your bindings.
Credit: Jediah Porter
Downhill Performance
The ATK Trofeo holds your boot to the ski in normal to mildly extreme downhill skiing circumstances. What do we mean by "mildly extreme downhill skiing"? We're talking about extreme terrain at mellow speeds or mellow terrain at extreme speeds. Use other bindings (and a rescue/film crew in a nearby helicopter…) for extreme terrain at extreme speeds. It releases in some falls under some amount of force. Performance while skiing and releasing is certainly not the most sophisticated. There is no third party certification backing up the release values and there are no extra springs or release elasticity to enhance retention or elasticity. There are no ski brakes with the ATK Trofeo.
ATK Trofeo heel pieces. At the time of purchase you choose your desired release value. It is not adjustable once you purchase. See the “10” embossed on each of these bindings, indicating the release value.
Credit: Jediah Porter
Touring Performance
How do we separate weight from "Touring Performance"? Well, weight is the biggest determinant of uphill efficiency. Everything else that informs touring efficiency gets examined under “Touring Performance”. The ATK Trofeo has excellent toe piece range of motion and the minimal construction collects minimal icing. There are only two heel levels: flat on ski and mid-height.
ATK Trofeo toe pieces. This is the same design used by many ATK (and rebranded ATK) bindings. It is proven and simple. Note the asymmetrical spring position. This is not normal, but works very well for ATK.
Credit: Jediah Porter
Ease of Use
Transitions between up and down are typical of all race style bindings. The main thing that differentiates race bindings from one another is the “stickiness” of the heel pin flap. Some bindings are very sticky to keep the flap in place, while others have zero stickiness and instead rely on each step to push and hold down the flap. We like the latter. The Trofeo heel flap has mid-range stickiness.
Durability
We had no issues with the durability of the ATK Trofeo and know of no reliable reports indicating any pattern of issues. AT Bindings are interesting. The lightest gear in other categories will be the least durable. In the case of AT bindings, gear across the entire lighter half of the spectrum (excluding the absolute lightest, purpose built race-only bindings) is more reliable than heavier options.
Race bindings like the ATK Trofeo are integral to modern “ski alpinism”.
Credit: Jediah Porter
Should you buy the ATK Trofeo?
Yes. If you want classic, simple race bindings for backcountry skiing the ATK Trofeo is a great choice. That said, all the other options in this category are also good. You can't really go wrong.
What Other AT Bindings Should You Consider?
In this same weight range and overall design we also like the Plum R170. The 170 comes with an adjustment plate (something you can also add on to the Trofeo). A direct comparison to what we tested here is the Plum R145. Even lighter than the Trofeo, and therefore very limited in backcountry application, is the Plum Race 99. If you like this weight range but want adjustable release and more heel lifter levels, check out the Top PIck Dynafit Superlite 150. The Dynafit weighs 13 grams more but adds those two significant features. With more features, though, comes more potential failure modes.
—Jediah Porter
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