Form Cycles – “Fatso” Ti Full Suspension Fat Bike

Fat Bike

We first covered Form Cycles way back in 2009 at the now defunct San Diego Custom Bicycle Show ( ) Daryl Roberts and Form Cycles have come a long way since then. They are still in Arizona (recently moved from Sedona to Cave Creek) and still building great Ti bikes.

It just so happens that the lucky owner of this custom softail fat bike is a moderator for the Mtbr discussion forums and he is also a builder himself. Daryl shows us the highlights of this innovative bike dubbed the “Fatso”, a full suspension titanium fat bike with Cannondale Lefty single sided front fork. Full suspension is definitely on the cutting edge for the fat bike category.

More info:
“Handcrafted Performance Bicycles”

About the author: Gregg Kato

Gregg Kato studied journalism and broadcasting in college while working many different jobs including deejaying, driving a forklift and building web sites (not all at the same time). Kato enjoys riding local Santa Cruz trails. Besides being an avid mountain biker, he is also a motorcycle fanatic. Two wheels, one Passion.

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  • IvanMTB says:


    Full suspension is a bit too big word for softails.
    What travel this frame is providing?


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  • Arturo says:

    I almost bought a Pugsley but decided against it after a test ride on my local mtb trail…the full rigid just wouldn’t work for me…the Pug was perfect for the beach but I wanted a bike I could take to a mountain bike trail as well…even after messing around with tire pressures the bike was just too…well…rigid…so I am ALL for new Fat Tire bikes with ANY suspension!

    This rear suspension looks very similar to a Moots YBB rear suspension. It may be enough with the big rear tire…certainly better than nothing…like the YBB the spring used must be matched with rider weight/riding style/use/preference to make it all work. I also don’t think this is a true FS frame…I think you would need at least 80 MM of travel to earn that title (and maybe a pivoting swingarm).

    I don’t know about the lefty fork…I know you Cannondale guys have complete confidence in this fork but I still cringe when I think about looking down and seeing nothing on the right side of my fork…I would have to ride it a while to gain the confidence of knowing the big tire isn’t going to cause a stress problem for the one fork leg.

    I will definitely save up to buy a FS Fat Tire bike…

    • honouredamongfoxes says:

      What about tracking? The lefty’s spread is built for an expected rim width. As rim width is increased, the center-tracking line of the front wheel is shifted rightward in relation to the bike’s centerline, creating an off-kilter center of gravity. Minor maybe, but these bikes are hefty, the tires are hefty, and the divergent forces grow.

  • VeloBike says:

    Arturo, you must live in terror every time you get in your car then.

    All the suspension is single sided 🙂

  • SLC29er says:

    For me it is not that the lefty doesn’t give me confidence, it is so ugly I get scared looking down at it.

  • SLC29er says:

    this frame on it’s own however, gorgeous!

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