One thing that’s become more popular in snowboarding recently are asymmetrical snowboards.
What does this mean? And what are the advantages of an asymmetrical snowboard?
What are Asymmetrical Snowboards?
Asymmetrical boards, sometimes just referred to as asym, can be asymmetrical in a few different ways:
- Asymmetrical sidecut
- Asymmetrical contact points
- Asymmetrical flex
First let’s take a look at asymmetrical sidecut, which is the most common form of asymmetry in snowboards.
Asymmetrical Sidecuts
A board has an asymmetrical sidecut when the heel edge of the snowboard has a deeper sidecut – (i.e. smaller sidecut radius) compared to the toe edge. Technically it could be the other way around and you could still call it asymmetrical, but that wouldn’t give you the advantages, which we’ll take a look at further down the page.
For example, let’s take the YES Greats 156. The heel edge has a sidecut raduis of 6.3m and the toe edge has a sidecut radius of 6.8m. Note that a smaller number in sidecut radius means that the sidecut is deeper.
Asymmetrical Contact Points (shorter heelside sidecut)
This usually goes hand in hand with an asymmetrical sidecut. Basically what it means is that the contact point on the toe side is further along the sidecut than the heel side, which is closer to the center of the board, if that makes sense! The image might help. It’s usually only subtly, as is the case with the sidecut difference, to the naked eye.
Asymmetrical flex
Another way a board can be asymmetrical is by adopting an asymmetrical flex in the core. This essentially means a slightly softer flexing section towards the heel side of the board vs the toe side.
Why Asymmetry? What are the Benefits?
Good question.
Humans are very symmetrical when you look at us from front on, but when you look at us from the side, that symmetry vanishes. And as snowboarding humans, we ride side on!


For most, it is more difficult to rail a tight quick turn on the heel side or to get as low into a carve on the heel side. Toe side is much physically easier to do this on. The goal of an asymmetrical snowboard is to actually try to realign that asymmetry in our bodies. In a way you could say it’s trying to regain symmetry between toe and heel side turns. There is an effort to make tight heel side turns as easy as their toe side counterparts.
How successful are these shapes at doing that? Pretty good I would say. They certainly bring heel side and toe side turns closer together, IMO. Maybe doesn’t make them completely even but, in my experience with most asyms, I have found improvement in response, carving and quick sharp turns on the heel side on asym boards.
Why Only Twins?
You might have noticed that asymmetry is only really found on true twin snowboards (there are exceptions to this rule, like the old GNU Zoid, and the current GNU Spasym). Why is this?
At a guess, I would say there are 2 main reasons for this.
Firstly, to have an asym that’s not a true twin, you need to have specific boards for goofy and regular footed riders. With a true twin, there is one specific heel edge and one specific toe edge, but since the shape is otherwise exactly the same apart from the asymmetry, you can ride it in both directions and it’s the same either way. So, as long as you have your heels set up on the heel edge it doesn’t matter if you’re goofy or regular.
With a directional board that’s designed to ride in one direction more optimally, you have to have separate goofy and regular models, if you have a different heel side vs toe side.
The other reason, might be the fact that if you are riding a directional board you are most likely riding a freeriding kind of style, which means you can use forward lean on your highbacks to achieve more heel response. Maybe not quite the same as using asymmetry but an option that’s available. Freestyle riders on the other hand (who are more likely to want a twin), tend to prefer less or no highback forward lean.
I would say the first reason is the biggest reason for this, but whichever is the most prominent reason, asyms are predominantly in the realm of twins, for the time being anyway.
Binding Angles
To get the most out of an asym board, it’s recommended to ride with a mirror duck stance. e.g. +15/-15 binding angles. I’m not sure of the mechanics of why this is, but that’s what’s usually recommended. I have in the past ridden asyms with a non-mirror-duck stance, and didn’t feel weird (all be it, not far off a mirror-duck-stance) but generally speaking this is the way to go.
Riding Switch
Again, not sure what it is mechanically, but riding switch on an asym is just that little bit more natural feeling than other true twin boards. Don’t get me wrong, any true twin is great for riding switch, but the asym just seems to make it that little bit better. Riding +15/-15 doesn’t hurt either, of course!
Tip and Tail Shapes
You may have also noticed that most asym boards have wonky looking tips and tails. What does this do? In short, not very much to nothing!
This is more of an aesthetic thing. There are asyms that don’t have this kind of look in the tip and tail, but more do than don’t.
Summary
So that’s the jist of asym boards, from my point of view.
Personally I’m a fan of them. I mean, who doesn’t want easier, more natural feeling heelside turns right?
Have you ridden an asym? What’s your thoughts – liked? Not so much? Be interested to hear what others think of asyms. Just leave a comment in the comments section below.
I’ll keep an eye out for the Asymulator review. How did those size 10 boots fit on the 154. Any tow drag issues at +/- 12 duck?
Thanks again!
John
Hi John
No drag issues. The 154 is 252mm at the waist and 262mm at the inserts. I’ve personally never had drag issues with anything that width. Riding +15/-15 angles and in Vans (quite low profile) 10s.
Thanks Nate. I appreciate the advice.
You’re very welcome John. Happy riding!
Nate.
Thank you!!!!!
Followed your advice and it has served me well. True life changing event with snowboarding in my life. Started on the Yes typo just 3-4 years ago and progressed well.
So here is the latest: I have a smoking deal available on Spring Break Twin 152cm. Problem being I am 190 lbs and 5’9″. Yep, way over the recommended weight of 110-150. Waist width is 150 so with my size 10 reduced footprint, I am good to go.
the 154 top end is 180 lbs and the 156 is 190.
Will I completely crush the spring on this board with my weight or should I buck up for a different size. Always open to you alternate recommendations or reality check.
By the way..I checked out the Smokin Asym. but are they still in business?
All the best!
John
Hi John
Thanks for your message.
I never got on the SB Twin – but I recently rode the 2020 Capita Asymulator – which is what the Spring Break Twin has evolved to for the 2019-20 season (pretty much the same board but with a new name and a couple of tweaks). Really fun, poppy, snappy, light, nimble buttery board. I rode the 154, but feel I would buy the 156. At speed it got a bit wobbly and I just felt I could have used a slightly longer size. That said, I did really enjoy the 154, and it’s the kind of board that has heaps of effective edge vs overall length, so you can certainly size down a bit vs your normal size. I’m 6’0″, 185lbs, size 10 boot.
However, I think ideally you’d still go at least for the 154, if not 156. If you were wanting it predominantly to ride as a freestyle/park deck and weren’t too concerned about performance at speed, you could get away with the 152. It would be a playful, softer feeling vs the large sizes, kind of ride but probably not something that would feel stable to charge on.
As far as I know Smokin are still in business. But it’s not a brand I test, so I couldn’t say for sure.
Some other great all-mtn-freestyle asym options are:
– YES Greats
– Never Summer Proto Type Two
– GNU Rider’s Choice
To name a few.
Hope this helps with your decision