The other day, while visiting with Dan Powell at PDW, we stopped next door at the Titus / On-One / Planet X offices to say hi. While there, shiggy had this lovely fat tire bike in pieces behind his desk. Intrigued, I asked for more info.

Stay tuned for a shop tour from the new US Titus / On-One / Planet X offices, as well as interview with the General Manager, Michael Golinski.

For now though, head past the break for the details and photos galore on the Askja.



How did the Askja come to be, and how does the company gage demand for a bike?


1. I design a bike I want to ride.

2. I looked at what production bikes are out there now and did not try

to duplicate them.

3. We build some frames. If they sell out, we order more. If not…

4. See #1.

My intent was always for a all-round fat tire bike rather than a snow/sand specific model. Made my first notes about it last October (2010) and did a quick pitch for it in November (2010) when I was in the UK.

I have an area near me (Ancient Lake in eastern Washington) with sand and lava/basalt rock. The rock outcroppings are just begging to be ridden. Should be a blast on fat tires @ 5 psi.

I call the bike a rockcrawler because it does let you do that and it looks more like a four wheeled rockcrawler (Jeep/buggy) than a “normal” bike.

Because of that the geometry is a bit steeper, has shorter stays, lower standover and higher BB than many snow-specific models.

So far I have ridden the bike in the wet/muck/roots of the Oregon Coast Range and in eastern Washington. Performance is mostly as I wanted. At Ancient Lake I was able to ride up some sandy rutted trails I had not cleaned in the past. Rocks became playgrounds. Some of the low ledgey lava fields I rode like slickrock in Utah, except they are slow, rough and chunky, not fast, smooth and flowy. I was grinning a lot.

Recent tests show the frame does have clearance for all current tires, including the Big Fat Larry, on 100mm wide rims. The chain will rub the tire when using the inner chainring and the largest 2-3 cogs. A common issue with symmetric (non-offset) frames.


What is the origin of the name Askja?


My working name for the model is Askja, an Icelandic caldera (also the name of the Icelandair plane I flew home on). Suits the Rock and Ice nature of the bike and reminds me of Ancient Lake.



  • Prototype aluminum frame (detail changes to be made for production)
  • Twin top tubes
  • symmetrical frame/wheels
  • Swapouts
  • On-One fork (not shown)
  • 100mm BB shell
  • 170mm rear hub spacing
  • 135mm fork spacing
  • Designed for trail riding on dirt/rocks as well as snow/sand
  • Shown with 2×9 drivetrain: 32/22×11-34
  • Profile Racing cranks
  • On-One Midge bars
  • Crud mud guards
  • Salsa hubs
  • Surly Large Marge rims
  • Surly Nate 26×3.8 tires


A special thanks to shiggy for the details and images.






  1. Brant on

    Performance oriented? Perhaps in the geometry, yes. But the weight has to be high, which would decrease any benefits. Also, I’m not sure that the twin top tubes will do much with the harshness of aluminum. I have been checking into more performance options in the fatbike world too and have seen these guys showing up out on MTBR: . 3.5 lb frame. I’ve heard that the salsa ti is close to 4. I noticed a new one they just sent that they posted on FB

    Brandon, I’m with you in looking for some more performance – it will be interesting to see what happens over the next year with this niche of bikes.

    Great coverage BikeRumor!

  2. alloycowboy on

    That’s not a bike, it’s a tank. I say that because the Askja will not break any speed records but it will surmount almost any terain as long you can maintain forward momentum.

  3. shiggy on

    @alloycowboy: not quite a tank (it hands very well), but it does roll well over almost anything. I was doing some tall log-overs on Sunday that worried me but the bike barely noticed.

    @Brant: the prototype frame weight is ~5 lbs. The Profile Racing crankset is the heaviest thing on the bike.
    I did the twin TT mainly because I like the look, and it is visually less bulky. No idea if it makes the ride better. Most of the “cush” comes from the tires. Our weight/performance to price ratio will be VERY good.

  4. Chris on

    I love it when people say something rides like a tank. Just curious but have any of you ever spent time in a tank? Clearly you haven’t otherwise you wouldn’t say something so dumb. I spent 6 years in M-60A3 and M-1A1 Abrams tanks and newsflash kidddies: they’re a hell of a lot smoother over broken terrain than ANY wheeled vehicle (and yes, I do include custom Baja racers in that group!) They also handle a lot better thanks to the traction provided by tracks. Finally, they’re usually a lot faster across open terrain than most wheeled vehicles. If this thing rides like a tank then sign me up – sounds like a lot more fun than some lightweight, ass-splitting poser race bike! 😉

    Shiggy: maybe you should name it the Patton!!

  5. King County on

    This looks pretty cool. I’d love to try one of these. You can’t expect a bike like this to ride like a bike w/ 29×2″ tires, but it looks like it can get places that regular mtn bikes cant reach. For snow and moist sand (shoreline), I use a regular mtb with low pressure 26×2.35 tires. It is basically what I had laying around.

  6. EpicThroatBeard on

    Wow, Brant must havre very refined sensabilities if he is able to fel the “harshness of aluminum” through the 3.8 tires. I’ve got a pee hidden some and I’ve just been waiting…

  7. ben on

    EpicThroatBeard and dave – Brant may have a sensitive taste..However, how do you explain all the people looking for a fatfork and the move to test out full sus options. It may just be a novelty, but I don’t think so. True, that the tires do provide squish, but I’m sure that there is still a difference.

    Aluminum is probably the last material I would like to ride. That said, it is cheap.


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