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2011 Specialized Stumpjumper FSR Comp vs 2013 Trek Fuel EX

The Trek Fuel EX size closest to your L is the 21.5". Compare the 21.5" instead

What changes on the Trek Fuel EX

Compared with the Specialized Stumpjumper FSR Comp in L, the Trek Fuel EX in 15.5" places the top of the head tube 48 mm lower and 71 mm further back, relative to the bottom bracket. Its wheelbase is 75 mm shorter, which can contribute to quicker direction changes.

Frame stack
−48 mm
Lower front end
Frame reach
−71 mm
Shorter frame reach
Wheelbase
−75 mm
Shorter: quicker to change direction
Head angle
−0.5°
Slacker: calmer steering
Chainstays
+5 mm
Longer: more planted

The two frames

2011 Specialized Stumpjumper FSR Comp (L) and 2013 Trek Fuel EX (15.5"), lined up at the bottom bracketBoth frames drawn to scale. The Specialized Stumpjumper FSR Comp is drawn in full with its measurements, and the Trek Fuel EX is the colored outline on top.J 1147

Specialized Stumpjumper FSR Comp, LTrek Fuel EX, 15.5"Drawn to scale and lined up at the bottom bracket.

Geometry side by side

MeasurementSpecialized Stumpjumper FSR Comp LTrek Fuel EX 15.5"Difference
Reach452mm381−71 mm
Stack594mm546−48 mm
Head tube angle68.5°68.0°−0.5°
Seat tube angle70.5°68.5°−2.0°
Chainstay length420mm425+5 mm
Wheelbase1147mm1072−75 mm
BB height335mm338+3 mm
Standover753mm745−8 mm
Seat tube length483mm367−116 mm
Effective top tubenot listed548
BB dropnot listed5
Head tube lengthnot listed108

Differences are the Trek Fuel EX minus the Specialized Stumpjumper FSR Comp. Full charts: 2011 Specialized Stumpjumper FSR Comp, 2013 Trek Fuel EX.

Where each sits in its class

Specialized Stumpjumper FSR CompTrek Fuel EX

AggressivePositionUpright
CalmSteeringQuick
PlayfulBalancePlanted

Each bike is ranked against the other trail bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.

What each ships with

The stock build of each bike's first listed trim. Parts that match are dimmed.

PartSpecialized Stumpjumper FSR CompCompTrek Fuel EX5
ForkRockShox Revelation RLRockShox Recon
Rear shockFox Triad IInot listed
ShifterSRAM X-7SRAM X5
DerailleurSRAM X-7, SRAM X-9SRAM X-5
CassetteShimano HG81SRAM PG-1030
ChainKMC X10not listed
CranksetSRAM S-1250SRAM S800
TireSpecialized S-Works Purgatory, Specialized Captain ControlBontrager XR3
HubSpecialized Hi Lonot listed
RimDT Swiss X420SLnot listed
BrakeAvid ElixirHayes Dyno Sport
SaddleSpecialized HengeBontrager Evoke 1
Framenot listedTrek Alpha Platinum
Wheelsetnot listedFormula DC-20
Headsetnot listedFSA NO.57SC
Seatpostnot listedBontrager SSR

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