The Specialized Stumpjumper has been around since the early 1980’s but things have certainly changed since its inception. The 2011 model year Stumpjumper FSR marks another step of change as Specialized has created Evolution (“EVO”) versions of the Stumpjumper, Epic, and Enduro. Inside we take a look at the 2011 Specialized Stumpjumper FSR Expert EVO.
[Specialized Stumpjumper FSR Expert EVO Gallery]
Video with Brandon about the EVO line:
So what separates the Stumpjumper FSR EVO from a standard Stumpjumper?
Some key differences to the EVO include:
In addition to geometry changes, there are also a bevy of equipment changes
In addition to the geometry and equipment changes, Specialized also takes it a step further by altering stem length, and brake rotor sizing based on the size of the bike.
The EVO features a tapered headtube setup . The bearings are housed in the frame in a clean fashion. This helps the EVO reduce a little bit of weight as well, since there are no cups with this design.
Fox F150 RL air-sprung alloy fork with 15mm thru-axle, external lockout, and rebound adjust can easily tackle technical terrain.
The custom RP23 is tuned for the Stumpjumper EVO to shine in aggressive situations. It’s customized to be able to get you up the hill, but to really shine on the way down. The bearings are housed in the linkage and the RP23 doesn’t use a DU bushing in the rear eyelet. This helps improve the suspension feel throughout the range of travel as the cartridge bearings help improve the sensitivity of the suspension.
Wider bars (720mm) come stock on the EVO.
Specialized also includes a Command Post. This gives you the ability to adjust the seat through three positions via a lever at the bar. The total adjustability range is 125mm.
The new lever sees some updates for 2011 that we noticed right away. It uses a more standard derailleur cable and is beefed up quite a bit in the pin area. It offers a much more positive feeling compared to previous generation Command Post levers. The lever also integrates with the Specialized lock on grip which was quite clean. Be sure to double check that the pivoting command post lever bolt has loc-tite on it as well to ensure it doesn’t creep loose.
Front shifting duties are handled by a SRAM X.7 direct mount derailleur. The ISCG-05 tabs also allow the EVO to get a chainguide attached easily to it. The SRAM PF-30 carbon cranks are paired with a 2×10 drivetrain and a Gamut bashguard as well.
Specialized has also made the change to a bigger PF30 bottom bracket system. The bottom bracket cups press into the frame where big bearings also reside. The spindle is wider as well, which is supposed to improve stiffness. There are PF30 adapters that will enable you to use other cranks/bottom bracket setups as well.
Out back, the medium cage 10 speed Sram X.0 derailleur handles rear shifting duties along with a 11-36 Shimano HG81 cassette. Specialized also includes a decent chain slap protector that keeps things quiet.
150mm fork up front with a 203mm rotor and beefier Specialized wheels and tires compared to the non-EVO version.
Custom Elixir brakes that are also blacked out to match the rest of the bike.
Based on the size EVO you purchase, you also will get between a 160-185mm rear rotor. The routing for the adjustable seatpost also worked quite nicely.
|Specialized||X Large Stumpjumper FSR Expert EVO complete no pedals||
Stay tuned as we get more time on the EVO and report back on it in a full review.