Tucked away in their booth at Sea Otter, Jamis hid a couple of prototypes that we missed. Fortunately, their account rep Marc Urbanski phoned in the news and some pics.

Shown at left is a prototype 29er full suspension rig with 100mm of travel, tapered headtube, asymmetrical chainstays and what looks like one heck of a leverage ratio imposed by the high shock placement on the rocker arm. Keeping those with the trend, the bike will have a 12mm rear thru-axle, something we saw on quite a few bikes of both wheel sizes.

Rumor is, while these are in alloy, the final product may come in both metal and carbon fiber iterations.  We’re working on getting some bigger photos. In the meantime, check out more after the break, along with news on their prototype 150mm trail bike that was hiding out with the 29er…

Another shot of the 29er, above. Note how far up and back the shock connects to the swingarm, should give the rear wheel less leverage over it, making the suspension pretty firm (all else being equal). Marc says it rides pretty sweet.

2012 jamis all mountain bike prototype with 150mm travel and ISCG tabs

This prototype is a new 150mm travel All-Mountain boinger with a tapered head tube, asymmetrical chain stays, 12mm thru axle rear and ISCG tabs.

2012 jamis all mountain bike prototype with 150mm travel and ISCG tabs

Both are planned for a Fall launch. Want to demo some Jamis mountain bikes in the meantime? They’ll have a full demo fleet at the 2011 Fruita Fat Tire Festival at the end of April.


What do you think?