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K2 Wayback 104 Review

Classic design with timeless appeal
K2 Wayback 104
K2 Wayback 104
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Price:  $900 List
Pros:  Damp, stable, predictable, classic reputation
Cons:  Heavy, long, “dampness” of riding that some find to be underwhelming
Manufacturer:   K2
By Jediah Porter ⋅ Review Editor  ⋅  Oct 12, 2017
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  • Weight - 25% 5.0
  • Stability at Speed - 15% 9.5
  • Firm Snow - 20% 8.0
  • Powder - 20% 9.0
  • Crud and Poor Snow - 20% 9.5

Our Verdict

K2 Discontinued the Wayback 104 in 2018.

The K2 Wayback 104 has been a staple for many dedicated skiers over the years, albeit previously named the Coomback, so we knew we had to include it in our review. While there were certainly lighter and trendier models available, this one earned its classic status for a reason. As a heavier ski, we found it to be a great bridge to the backcountry for those accustomed to beefy resort skis. The downhill performance was strong and familiar. Paired with light boots, bindings, and skins, the weight penalty was basically absorbed. We found these to be great first backcountry skis for the skeptical resort rider.

New Season, New Ski — the Coomback is no more!
This ski got a substantial overhaul, with a new name and some tweaks to construction. All purchase links will direct you to the Wayback 104, as the Coomback is no longer available. The new version is pictured above and a list of the changes are outlined below.

Our Analysis and Test Results

The K2 Coomback is now the Wayback 104

The K2 Coomback, named for the late film and guiding legend Doug Coombs, has had a long run as one of the most venerable ski designs in existence. But the time has come for a change, and for this ski that also means a name change. Now called the Wayback 104, this update comes with a new look and some construction tweaks. Below you can see the iterations of this ski from the 15/16 model we tested on the far right, to the 16/17 graphics update, and, finally, the brand new Wayback on the left.
K2 Wayback 104
K2 Wayback 104
K2 Coomback 2017
K2 Coomback 2017
K2 Coomback 104
K2 Coomback 104

Here is a full summary of the update:
  • Name - The classic Coomback becomes the Wayback 104 for the new season.
  • Graphics - Along with the name changes comes a completely new look.
  • Construction - K2 added directional uni-carbon running the entire length of the skis in order to give a little extra stability and energy without increasing the weight.
  • Price - This overhaul comes with a noticeable price hike, from $700 to $900.

Keep in mind that the rest of this review reflects the older Coomback version, as we haven't yet tested the Wayback 104.

Hands-on Review of the Coomback 104

K2 Wayback 104 backcountry skis - first turns of the 2016/17 season. just before launching the new ski...
First turns of the 2016/17 season. Just before launching the new ski review, Jed was able to get out for some October pow in the Tetons. The perfect motivation for polishing up this test!
Credit: Jediah Porter


The Coomback 104 is the second heaviest ski in our test. At 1772g per ski, we put it at the upper end of what is reasonable for day-to-day ski touring and ski mountaineering. At this weight, you are approaching the mass of some of the lightest resort All Mountain Skis we tested. Those skis are purpose-built for the downhill, and in most cases, the performance shows that. The Coomback's mass is the one somewhat outdated aspect of its design, and we expect that only those with somewhat "traditional" ideas about backcountry skiing will justify the weight. These traditional ideals include the mantra that "it's all about the down."

If downhill ski performance is king, you are less likely to be too concerned about the weight of your skis. That said, you cannot deny that a great percentage of the backcountry skiing experience is the uphill. For climbing, lighter skis are way better. Even our "moderately" weighted Editors' Choice Volkl V-Werks BMT 90 is about 300g less per ski. That's about a pound of difference for the pair. The BMT's weight class is quickly becoming the benchmark for all-around backcountry performance. Compromise some on downhill performance or versatility, and you can get something like our Top Pick Award winner for powder, the DPS Tour1 Wailer 99, which is super light and fast. And it's almost a pound less than the Coomback, per foot!

K2 Wayback 104 backcountry skis - with heavy skis or light, glide them don't lift them. ski gear is...
With heavy skis or light, glide them don't lift them. Ski gear is meant to slide, even on the uphill.
Credit: Jediah Porter

Stability at Speed

We expect the long riding, heavier design of the Coomback to be stable at speed. And we were right. Further, the classic K2 "damp" ride experience really smooths thing out at a fast clip. Something in the K2 design and construction makes them very dampened. Basically, dampness is the opposite of springy. All skis need some spring action, but it also needs to be balanced with dampening. K2 leans toward the damp end of that balance, in general. The Coomback ski, if dampness suits your style and preferences, is a fast riding, smooth turning stable stick. Only the big and lively Top Pick Dynafit Chugach is more stable at speed. The Coomback's stability was much appreciated by our lead test editor, and IFMGA Mountain Guide, when he took the K2's on an 11-day fly-in basecamp ski mountaineering trip in Alaska's Chugach range. Big terrain and funky snow was the name of the game. Wide open railing rewarded this tester on the Coombacks.

Firm Snow Performance

Generally, we look at touring skis and firm snow performance as an indirect relationship between waist width and hard snow grip. There are many many variables that inform a ski's performance, especially in tough snow. Generally, however, with modern construction and moderate to light weight skis, we can draw fairly accurate conclusions about a product's hard snow performance from its waist width. Narrow skis grab better than wide ones. We found that the best hard snow skis in our test were the narrowest. The Top Pick for hard snow is the narrowest. Next in line are the skis of moderate weight that stay under 97mm underfoot or so, like the Scott Super Guide 95 and the Volkl BMT. The next tier down is more varied.

The skis that scored an eight in terms of firm snow performance (which is a function of icy performance and corn snow acumen) reveal no easy generalizations. There is the mid-fat Coomback here, grabbing good enough on 50-degree AK ice faces above gaping bergschrunds, and there's the narrow K2 Wayback 96. There's the French generalist Dynastar Mythic and the Austrian hard-charging, 108-underfoot Dynafit Chugach. We tested every one of these products in rock hard and corn snow, and came to the same conclusion for the lot. It works, but a specialized tool is likely better. Super light powder harvesters like the La Sportiva Vapor Nano get real scary when it's icy.
K2 Wayback 104 backcountry skis - dimensions of the k2 coomback 104. notably, like other k2 skis we've...
Dimensions of the K2 Coomback 104. Notably, like other K2 skis we've used, our actual measurements put the length at 187, not 184.
Credit: Jediah Porter

Powder Snow Performance

All skis and skiers like powder snow. We'd insult the intelligence of our readers to try and draw profound distinctions in the performance of various modern skis for powder snow. They all do well, not necessarily due to any magic in the manufacturing but rather due to the inherent magic of skiing powder snow.

K2 Wayback 104 backcountry skis - steep chuting in grand teton national park. jed porter in stewart...
Steep chuting in Grand Teton National Park. Jed Porter in Stewart Draw.
Credit: Chad Buelow

Crud/Poor Snow Performance

It's bad snow that distinguishes backcountry skis. Whether that tough snow is breakable crust, "mashed potatoes" or something else, it is in this category that we find the true value of well-designed backcountry skis. The absolute best bad snow crusher is the monster Dynafit Chugach. With full rocker and great mass, we had 10/10 experiences blasting through the bank with the Chugach. The next strata, those skis that scored 9/10, holds a varied list. The Coomback here is one such product. The weight helps. As does, surely, the long early rise tip. Finally, the dampness that K2 builds in is sure to mix with the other attributes to help out. The full rocker and smart Volkl design in the much smaller BMT 90 combine to get that much lighter ski through the toughest of conditions with comfort equal to that on the Coomback.
K2 Wayback 104 backcountry skis - rocking out with the k2 coomback on top of alaska's mount fafnir...
Rocking out with the K2 Coomback on top of Alaska's Mount Fafnir. Our lead test editor, Jed Porter (in the green pants) chose the Coomback for this committing 11-day base camp ski guiding trip.
Credit: Jediah Porter

Best Applications

K2 Wayback 104 backcountry skis - in spite of the coomback's heavy weight, the versatile downhill...
In spite of the Coomback's heavy weight, the versatile downhill performance is much appreciated for expedition skiing. In the wild, for a long time, one can encounter any of a wide range of conditions.
Credit: Jediah Porter

The Coomback is a great tool for the skier looking for all-around backcountry performance, without much regard for uphill efficiency. Ten years ago, when the original Coomback was launched, this "weight point" represented the best compromise of up and downhill performance. Now, there are lighter products, but there are few that ski downhill as well.


The Coomback model is widely available, highly regarded, and surely quite durable. It is occasionally on sale, and will last the user many seasons of dedicated use. It is a good value.


The Coomback does its late namesake proud. Doug Coombs is one of the most influential skiers ever, and his ski is also proving to be influential. As ski weights creep down and the dorks count ounces, the Coomback reminds us that solidness and ski performance are worth carrying around from time to time.
K2 Wayback 104 backcountry skis - skinning in the chugach. the weight of the coomback is a little more...
Skinning in the Chugach. the weight of the Coomback is a little more than most will want for big country touring.
Credit: Jediah Porter

Recommended Pairings

We tested the Coomback with Dynafit Speed Turn bindings, Black Diamond Mohair Mix skins, and Dynafit TLT 6 Performance boots. This is a relatively lightweight combination. For skiing technicians, however, the light accouterments can balance the ski weight and make an eminently tourable package.

Other Versions

K2 tacks on a centimeter to the waist width for the Coomback 114. This is a big ride for big skiers in big terrain. On soft snow. We expect it would handle the chop and breakable even better, while delivering a fast ride to those that dig the damp experience K2 is known for.

Jediah Porter
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