Snowbike Project – Part 2


The winter of 2017-2018 has been a rough one.  Snowfall has been well below average in the Southwest, and that’s made for scary conditions both in terms of snowpack stability (lots of avalanches) and hazard coverage (stumps and rocks).  The sad truth is that since the New Year, two individuals I’ve known personally who were both experienced winter backcountry travelers have died while backcountry skiing and snowboarding.  I’m not sharing this with you to try and scare you away, but to point out the fact that winter backcountry recreation can be very dangerous.  Yet the backcountry is also one of the most enjoyable places on earth, which explains why folks seek out the peace of the wilderness in every season.  If you want to snowbike in the backcountry and make it home at the end of your ride, then you need to have the gear, knowledge, and training to safely ride in backcountry avalanche terrain.


Snow science and snow safety are two disciplines that I would strongly encourage you to approach with the mindset of “there is always something to learn.”  You can get a doctorate degree in snow hydrology, so no, that’s not an embellishment on the amount of learning potential.  There’s also a great reason to continually practice with your avalanche gear, because if someone in your party is buried in an avalanche, seconds can mean the difference between a successful rescue and a body recovery.  If that someone buried is you, you’re going to want highly skilled buddies coming to your rescue, so make sure the folks you ride with are on the same level of training and preparedness.

Standard avalanche kit consists of a shovel, probe, and transceiver which is commonly called a beacon.  I’m personally a big fan of carrying the biggest shovel I can fit in my pack, so I’m currently carrying Black Diamond’s Evac 9 shovel.  Yes, it takes up more space and weighs more than other options out there – but when it comes time to dig, I can move snow much faster and dig more effectively than if I were using a tiny shovel (have you tried to dig a hole while standing with a foot long shovel?  It doesn’t work so well).  Probes are typically available in aluminum and carbon fiber—I own both, and use both, so I’d say it’s a matter of preference.  Just make sure your probe can be assembled quickly and will lock into its assembled form.  Beacons could take up a number of articles to cover completely, so I’ll just say that I’ve been using the Peips DSP Pro for the last few winters, and have been really happy with it.  Having the ability to mark multiple buried beacons is a huge help when searching in a multiple burial situation.

Yet the most important feature on any beacon is going to be the skill of the operator using said beacon.  So practice with your beacon of choice to the point that using it becomes an instinct. Then go practice some more.  If you ski or snowboard, many ski areas have beacon basins where you can do practice searches on beacons buried by ski patrol.  If you don’t live by a ski area, have a buddy go bury a transceiver in a backpack for you to go find.

Airbag backpacks are also becoming much more common in the backcountry because they reduce the chances of burial, and have the potential to protect the wearer from injury.  Black Diamond has taken things a step further with its Jetforce line of airbag backpacks that can also create a pocket of breathing air, should a burial occur.  Jetforce packs use a battery powered ducted fan to inflate their airbags where other brands use CO2 (Jetforce is an accurate name, the thing sounds like a jet engine when you deploy it).  Black diamond’s packs can be deployed multiple times on a single battery charge (CO2 packs are a one inflation per cartridge deal), which is a comforting feature when you consider that Mother Nature isn’t limited to only one avalanche per day.

Lastly, carrying radios is a great way for your group to communicate, especially when moving through hazardous terrain one at a time.  Many places have adopted radio communication plans so that multiple groups in the same area can communicate and make plans that do not risk the safety of other groups.  Once you’ve picked up all of your avalanche gear, it’s time to go take an avalanche class.


A level 1 class from the American Institute for Avalanche Research and Education (AIARE; pronounced air-ee) is an excellent way to learn about backcountry decision making, avalanche rescue, and avalanche terrain identification.  Level-one courses will have a classroom element and a field element so you can apply what you’ve learned in the classroom by analyzing real terrain and digging actual snow pits under the guidance of an instructor.  Snow pits allow you to see every layer in the snowpack and to gauge how stable the snowpack is with a number of different tests.

Another great resource exists with avalanche information centers, such as the Colorado Avalanche Information Center (CAIC) which provides weather and avalanche forecasts, snowpack discussions, and detailed reports whenever backcountry travelers are involved in an avalanche.  Consult Google or your local ski or snowmobile shops to find out where to get good avalanche information.


When you’re in the backcountry, pay attention to what’s going on around you.  The weather can change in an instant, and a calm bluebird day can turn into a blinding blizzard in minutes.  Keep an eye on which way the wind is blowing and how the wind may be scouring snow from one place and depositing it another.  Is the sun causing the snow to melt in certain areas (that will freeze at night) while shade is keeping other areas fresh and fluffy?  Snowpack can change significantly from aspect to aspect.  During a recent ride, we happened upon a perfect example of how wind-loading + shade + a bad snowpack had caused a really bad day for a snowmobiler.

This slide happened where the wind loaded snow on a Northeast facing aspect that receives little sun.  The weight of all that additional snow brought in by the wind strained a weak snowpack (note the cornice on the top and the increase in thickness of the snowpack at the top of the slide, called the crown, at the top left). When a sled came ripping into what looked like a great untracked hill the snowpack let go.  Backcountry travel in avalanche terrain is a slow process, so take your time and make good terrain assessments.  YOLO around one time too many and you might not get to go home.

The same feature shot hours apart.  In the morning the weather was perfect bluebird calm, but the afternoon got quite stormy.


In the blink of an eye an awesome day in the backcountry can turn into a serious situation, which is why having good riding gear is so important.  It may be warm and sunny in the morning, but should an afternoon storm roll in, or worse yet, should you get delayed by several hours or worse (a mechanical or a really stuck snowbike), having gear that will keep you warm and dry is critical.  You may be totally comfortable with just a cotton hoody when the sun is out, but how will you stay warm if you end up having to spend a windy night in the backcountry?

Klim’s Valdez parka and Havoc bibs have extensive venting that can be opened up when conditions call for just that cotton hoody, and when it gets cold and nasty these two pieces can be closed up becoming a veritable waterproof shield that can be layered over all the insulation layers you need.  The Togwotee gloves can be run as a shell in warmer temperatures, or used with the included fleece liner when the weather gets cold.  Likewise, the Adrenaline GTX BOA boots worked so well that we didn’t notice them, because our feet were just that comfortable.  From standing on the pegs to hiking exposed rocky ridge lines, these boots worked great.  Rounding out this excellent riding gear setup are the Oculus googles that provided fog-free performance 100% of the time we were riding.  Yes, good gear costs more, but when it comes down to it, I’ll gladly pay more to know that I’ll be warm and dry, no matter what the weather decides to do.  Cold, wet, and several hours from the truck is a special kind of miserable.  Do yourself a favor and buy good gear the first time around—that way you can get out and enjoy more days in a season instead of having to wait for those warm and sunny days.

Timbersleds are amazing machines that will have you saying “worth it” minutes after you first get on one.  Their ability to easily access terrain that has traditionally been the realm of expert backcountry snowmobilers and backcountry travelers means that more riders are heading into avalanche terrain who may not have the proper gear and training.  So please, get proper avalanche gear and good riding gear.  Take an Avalanche class.  Go dig pits and do practice beacon searches.  Read the reports and forecasts from your local avalanche center.  Pay attention to what the world is doing around you when you’re out there, and realize that some days, it may just be a better call to go ski in bounds at the resort.  Most importantly, when you’re out there enjoy every minute of it—because powder days never last long enough.

FULL DISCLOSURE: Timbersled provided demo units for this series of articles.  The motorcycles and all other accessories are owned by the author.  Klim provided all of the riding gear used for this project at no cost to the author or American Adventurist.  Likewise, Black Diamond provided the Jetforce Packs at no cost to the author or American Adventurist.

Snowbike Project – Part 1

From dirtbike to Timbersled

Snowbikes are every bit as fun as they look like on the internet, and then some.  We all know that dirtbikes are an absolute hoot to ride, and few things in life are as excellent as a bottomless powder day on your favorite ski resort.  So, if you can image what enjoying both of these activities at the same time is like, you’ll have a vague notion of how awesome snowbikes can be.  Freeriding in a winter wonderland has never been more free-to-ride, as you can go just about anywhere you want to.  And thanks to several companies, getting setup for snowbiking has never been easier.  This is the first article in an ongoing project that will show you what it takes to gear up for snowbiking, how to ride safely in the backcountry, and get you inspired to explore a winter world with a snowbike.

Wrench Time

Timbersled’s ARO (pronounced “Arrow”) systems make turning your dirtbike into a snowbike easier than ever before.  The days of spending hours cutting airboxes and bleeding brakes have been replaced with a (nearly) bolt-on system that you can install in just a few hours.  We installed Timbersled ARO 137 systems on a 2017 KTM 500 EXC-F and a 2012 Yamaha WR450F.  Here’s how the process went, going from knobbies to a track and ski.

Dirtbikes aren’t designed to operate in snow, so you need to add a couple of things to enable the dirtbike’s motor to run well in a winter environment.  Snow is much more effective at cooling than air, so the problem becomes keeping your bike up at operating temperature when you’re bombing around in the powder.  The first part you need to add to any dirtbike that’s going to become a snowbike is a thermostat, exactly like what would be found in your car.  Thermo-Bob makes thermostat kits for almost every dirtbike that can be turned into a snowbike, and when your engine starts to cool off the Thermo-Bob will cut off coolant flow to your bike’s radiators to help conserve engine heat.

Thermo-Bob installation on both bikes was straightforward and allowed us to install a Trail Tech TTO Temp sensor, so that we could monitor engine temps in real time.  Yet even with a Thermo-Bob, snow flying onto your engine can keep the temperatures too low, so we picked up engine jackets from Power Sports Tech (PST) to keep snow off our engines.  Just like a ski jacket, the PST Engine jackets can be adjusted and vented to allow air and snow to contact the engine or keep it off depending on riding conditions.

Other than the Thermo-Bob thermostats and the PST Engine Jackets, we switched to 0W-40 Shell Rotella T6 synthetic oil to allow for easer cold starts and to help with lubrication in low temperatures.  If your bike doesn’t have a header guard, pick one up to protect your expensive snow pants from melting on a hot header.  Converting your dirtbike to a snowbike is also a great excuse to go through your bike and grease everything in addition to performing any maintenance tasks that you may have been putting off.  Spending a few bucks on parts is a much better deal than having to walk out of the woods in the dead of winter.

In addition to a Timbersled ARO track system, you’ll also need to get a fit kit, which has specific reducer bushings and other parts for your bike.  The Timbersled system also replaces your bike’s rear shock, and we highly recommend the Timbersled Strut System (TSS) which is an airshock that replaces your stock coil unit.  Likewise, the Timbersled TRIO is a great alternative to having to sink money into constantly re-valving your forks for snowbiking and then back to dirt settings.  Snowbiking places different loads on your fork than dirt does, and the TRIO helps your fork better handles those loads.  Like the TSS, the TRIO is an air shock, so you can dial-in the air pressure in to get the exact damping performance you want.  A wheel kit will make moving your Timbersled around much easier on dry land, and a snowbike ramp is also a good buy if you’re going to be transporting your snowbike in the back of a truck as we did.

Installing the Timbersled system on your dirtbike will take a few hours for any experienced wrench.  We installed the kits on both of our bikes in a single day, working at a leisurely pace and stopping to take photos.  Check out the official Timbersled YouTube channel to familiarize yourself with the install process, and look up the part numbers for your specific bike’s reducers before you hit that step in the install process to speed things up.  On both of our bikes, the correct reducers were not stamped with any part numbers, but this was a minor snag that was resolved with test-fitting to check for proper clearance and alignment.  Use common sense if you run into this problem and don’t sweat the extra parts left over – the fit kits are designed to work with more than one model of bike.

We also had to cut off the kickstand bracket on our WR450F to clear the track, so if you’re working with one of these bikes, pick up a spare before you plan on riding dirt again.  Other than that, everything goes together without much hassle, and not having to hack up an expensive airbox or deal with brake fluid makes your time in the shop that much better.  The ARO kits make it feasible to ride snow one weekend and dirt the next, with just a few hours of wrench time in between.

Gear For Your Comfort and Safety

With your snowbike all sorted and ready to ride, you’ll also need to make sure that you’ve got good gear for yourself to stay warm and dry while out riding.  Cold and wet can turn into a serious situation fairly quickly, which is why we recommend quality riding gear, such as the Adrenaline GTX BOA boots, Havoc Pants, Valdez Parkas, Togwotee gloves, and Oculus goggles we used from Klim.  All this gear worked brilliantly, and kept us warm and dry on bluebird powder days and during obscenely windy blizzards.  Riding gear will be covered more in the next article.

If you’re going to be riding anywhere near avalanche terrain, you absolutely must pack and know how to use avalanche gear: A beacon, probe, and shovel.  It’s also worth picking up an airbag backpack, such as the Black Diamond Jetforce Saga 40 which we’ve been using.  Airbag backpacks have been shown to reduce the chances of burials in avalanches, potentially protect the wearer from injury, and in the case of the Black diamond Jetforce packs, provide a pocket of breathing air should a burial occur.  Jetforce packs use a ducted fan to inflate a 200 liter airbag with atmosphere, unlike other packs that use a CO2 cartridge.  We’ll be covering snow safety in depth in the next article.

This may all sound like a bunch of work just to be able to ride your dirtbike in the snow, but I’m here to tell you that it is worth every penny and worth every second of your time.  A Timbersled allows you to explore a wintry world better than anything else designed to go over-snow.  It combines all the best parts of dirt biking with the experience of big mountain powder skiing all without the crowds or the lift lines and at half the price of buying a new mountain snowmobile.  A Timbersled system is the key to unlocking a whole new world to ride in.



Timbersled provided demo units for this series of articles.  The motorcycles and all other accessories are owned by the author.  Klim provided all of the riding gear used for this project at no cost to the author or American Adventurist.  Likewise, Black Diamond provided the Jetforce Packs at no cost to the author or American Adventurist.