2012 Specialized Stumpjumper FSR Comp vs 2014 Trek Fuel EX
The 21.5" is the Trek Fuel EX size closest to your XL Specialized Stumpjumper FSR Comp. 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 Comp in XL, the Trek Fuel EX in 21.5" places the top of the head tube 15 mm lower and 7 mm further back, relative to the bottom bracket. Its wheelbase is 5 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −15 mm
- Lower front end
- Frame reach
- −7 mm
- Shorter frame reach
- Wheelbase
- −5 mm
- Shorter: quicker to change direction
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- +5 mm
- Longer: more planted
The two frames
Specialized Stumpjumper FSR Comp, XLTrek Fuel EX, 21.5"Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Stumpjumper FSR Comp XL | Trek Fuel EX 21.5" | Difference |
|---|---|---|---|
| Reach | 474mm | 467 | −7 mm |
| Stack | 606mm | 591 | −15 mm |
| Head tube angle | 68° | 68.0° | ±0.0° |
| Seat tube angle | 70° | 68.5° | −1.5° |
| Chainstay length | 420mm | 425 | +5 mm |
| Wheelbase | 1181mm | 1176 | −5 mm |
| BB drop | 1mm | 5 | +4 mm |
| BB height | 338mm | 338 | ±0 mm |
| Standover | 761mm | 742 | −19 mm |
| Seat tube length | 523mm | 508 | −15 mm |
| Head tube length | 150mm | 157 | +7 mm |
| Effective top tube | not listed | 648 |
Differences are the Trek Fuel EX minus the Specialized Stumpjumper FSR Comp. Full charts: 2012 Specialized Stumpjumper FSR Comp, 2014 Trek Fuel EX.
Where each sits in its class
Specialized Stumpjumper FSR CompTrek 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 CompComp | Trek Fuel EX6 |
|---|---|---|
| Fork | Fox Evolution F140 RL | RockShox SEKTOR |
| Rear shock | Fox Triad II | not listed |
| Shifter | SRAM X-7 | Shimano Deore |
| Derailleur | SRAM X-7, SRAM X-9 | Shimano Deore, Shimano SLX Shadow |
| Cassette | SRAM PG-1030 | Shimano HG62 |
| Chain | KMC X10 | not listed |
| Crankset | SRAM S-1250 | Shimano Deore M522 |
| Tire | Specialized Purgatory Control, Specialized Ground Control | Bontrager XR3 |
| Hub | Specialized Hi Lo | not listed |
| Brake | Avid Elixir 7 SL | Avid Elixir 3 |
| Saddle | Specialized Henge | Bontrager Evoke 1 |
| Frame | not listed | Trek Alpha Platinum |
| Wheelset | not listed | Formula DC51 |
| Headset | not listed | FSA NO.57SC |
| Seatpost | not listed | Bontrager SSR |
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