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Dakar XCR Pro Tile Spec Button Geo Button 2006 Model
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Big wheels aren’t just for big riders any more. The same things that make big hoops good for them—improved traction from a larger contact patch, more pinch-flat resistance, lower rolling resistance and improved ride—make 29’ers an efficient upgrade for a lot of other folks, too.

Our 26” offroad geometry is famously honed, so we took great pains to tweak every aspect of our 29’er frame geo to be sure these bikes were done right. We didn’t just bolt on 29” wheels and stretch the fork and chainstays a little—we looked at wheelbase lengths, front end trail, front center distances, handlebar height and width, fork crown clearance, standover and weight distribution to achieve the same predictable, well-mannered, radar-in-the-down-tube handling of our 26-inch bikes -- with the added roll-over-anything benefit of those giant tires.

Whether you favor the Dragon’s famous-Jamis steel ride, the Dakota’s brutally efficient aluminum chassis,
or the stripped-to-the-bare-essentials Exile singlespeed, you’ll be doing it right on a Jamis 29’er. It’s the only way
we know how.


Features & Benefits  

Upgrade
New frame design with re-enforced headtube/downtube junction
New curved downtube design for better toe clearance
Shimano M525 Hubs
Relic 9:1 cog spacer with 29’er SS friendly gearing 21T
WTB ExiWolf 2.3 tires with DNA compound and a wire bead.
Easton EA30 31.8 (OS) Bar and stem, bar is now 685mm wide
Avid Juicy 3 Brakes

Upgrade
Larger diameter wheels roll over obstacles more easily due to decrease in approach angle
Larger wheels have a lower rolling resistance for the same tire width
Larger wheels are less prone to sinking in mud or sand
Larger contact patch increases cornering traction
Larger wheels are less prone to pinch flatting
The 29’er geo offers taller riders a more natural frame geometry
The rigid fork tells the world just how badly you want to snub “the man”

Reynolds 631 air-hardened chromoly actually gains strength in the weld zone area, instead of losing it like all other welded material, allowing Reynolds to draw this tubing thinner, for a lighter, stiffer frame with outstanding “feel”. Heat treated cro-moly rear stays & investment cast dropouts increase torsional stiffness by 30%
Frame features lost wax rear entry dropouts with chain tensioning set screws, slotted disc brake tabs for caliper alignment & positioning, flush “nest”-type cable guides with removable hose/cable retention clips, and a CNC’ed removable derailleur hanger that slides over the hub axle and fits within the rear entry dropouts
Full cromoly rigid fork is suspension fork length so frame geo is suspension ready
Avid Juicy 3 hydraulic disc brakes offer more power, better feel, require less maintenance, and are often lighter than cable-actuated disc brakes
WTB Mototec clamp-on grips feature a nylon skeleton that clamps down firmly on the bar, providing a no-slip contact point; over-sized knobs offer superior shock absorption & control in rough conditions
Easton EA30 cockpit parts feature Easton’s proprietary aluminum taper wall technology, a cold working process that produces multiple tapers to eliminate stress points & dissipate impact energy evenly
Easton EA30 31.8 (OS)handlebar and stem for a stiffer more solid handling bike
WTB’s ExiWolf 29 x 2.3 tire. The long and stable contact patch features a micro tread with loads of grip and a lean approach angle, while the large pliable casing provides great shock dispersion for increased control in the rough.
WTB Rocket V Comp saddle’s slim contoured shape with small “whale-tail” rear enhances pedaling leverage
This bike can EASILY be converted into a light-weight geared 9-speed MTB! With the Shimano rear hub, just add the parts you have laying around!
 


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