2011 Specialized Stumpjumper FSR Expert EVO vs 2013 Trek Fuel EX
The 21.5" is the Trek Fuel EX size closest to your XL Specialized Stumpjumper FSR Expert EVO. We match frame stack and reach. This is a geometry comparison, not a fit recommendation; stem, spacers, handlebars and saddle setup also affect your riding position.
What changes on the Trek Fuel EX
Compared with the Specialized Stumpjumper FSR Expert EVO in XL, the Trek Fuel EX in 21.5" places the top of the head tube 13 mm lower and 9 mm further back, relative to the bottom bracket. Its wheelbase is 19 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −13 mm
- Lower front end
- Frame reach
- −9 mm
- Shorter frame reach
- Wheelbase
- −19 mm
- Shorter: quicker to change direction
- Head angle
- +1.0°
- Steeper: sharper steering
- Chainstays
- +5 mm
- Longer: more planted
The two frames
Specialized Stumpjumper FSR Expert EVO, XLTrek Fuel EX, 21.5"Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Stumpjumper FSR Expert EVO XL | Trek Fuel EX 21.5" | Difference |
|---|---|---|---|
| Reach | 476mm | 467 | −9 mm |
| Stack | 604mm | 591 | −13 mm |
| Head tube angle | 67° | 68.0° | +1.0° |
| Seat tube angle | 70.5° | 68.5° | −2.0° |
| Chainstay length | 420mm | 425 | +5 mm |
| Wheelbase | 1195mm | 1176 | −19 mm |
| BB height | 335mm | 338 | +3 mm |
| Standover | 770mm | 742 | −28 mm |
| Seat tube length | 533mm | 508 | −25 mm |
| Effective top tube | not listed | 648 | |
| BB drop | not listed | 5 | |
| Head tube length | not listed | 157 |
Differences are the Trek Fuel EX minus the Specialized Stumpjumper FSR Expert EVO. Full charts: 2011 Specialized Stumpjumper FSR Expert EVO, 2013 Trek Fuel EX.
Where each sits in its class
Specialized Stumpjumper FSR Expert EVOTrek Fuel EX
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.
| Part | Specialized Stumpjumper FSR Expert EVOExpert EVO | Trek Fuel EX5 |
|---|---|---|
| Fork | Fox F150 RL | RockShox Recon |
| Rear shock | Fox RP23-S | not listed |
| Shifter | SRAM X9 | SRAM X5 |
| Derailleur | SRAM X-7, SRAM X.0 | SRAM X-5 |
| Cassette | Shimano HG81 | SRAM PG-1030 |
| Chain | KMC X10 | not listed |
| Crankset | SRAM S-2200 | SRAM S800 |
| Bottom bracket | SRAM PF30 | not listed |
| Wheelset | Roval Traverse AL | Formula DC-20 |
| Tire | Specialized S-Works Purgatory, Specialized Purgatory Control | Bontrager XR3 |
| Brake | Avid Elixir CR SL | Hayes Dyno Sport |
| Handlebar | Specialized Enduro | not listed |
| Seatpost | Specialized Command Post | Bontrager SSR |
| Saddle | Specialized Henge | Bontrager Evoke 1 |
| Frame | not listed | Trek Alpha Platinum |
| Headset | not listed | FSA NO.57SC |
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