2011 Specialized Stumpjumper FSR vs 2013 Trek Fuel EX
The 18.5" is the Trek Fuel EX size closest to your M Specialized Stumpjumper FSR. 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 in M, the Trek Fuel EX in 18.5" places the top of the head tube 16 mm lower and 7 mm further forward, relative to the bottom bracket. Its wheelbase is 15 mm longer, which can contribute to stability at speed.
- Frame stack
- −16 mm
- Lower front end
- Frame reach
- +7 mm
- Longer frame reach
- Wheelbase
- +15 mm
- Longer: steadier at speed
- Head angle
- −0.5°
- Slacker: calmer steering
- Chainstays
- +5 mm
- Longer: more planted
The two frames
Specialized Stumpjumper FSR, MTrek Fuel EX, 18.5"Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Stumpjumper FSR M | Trek Fuel EX 18.5" | Difference |
|---|---|---|---|
| Reach | 424mm | 431 | +7 mm |
| Stack | 584mm | 568 | −16 mm |
| Head tube angle | 68.5° | 68.0° | −0.5° |
| Seat tube angle | 70.5° | 68.5° | −2.0° |
| Chainstay length | 420mm | 425 | +5 mm |
| Wheelbase | 1116mm | 1131 | +15 mm |
| BB height | 335mm | 338 | +3 mm |
| Standover | 743mm | 730 | −13 mm |
| Seat tube length | 445mm | 445 | ±0 mm |
| Effective top tube | not listed | 605 | |
| BB drop | not listed | 5 | |
| Head tube length | not listed | 132 |
Differences are the Trek Fuel EX minus the Specialized Stumpjumper FSR. Full charts: 2011 Specialized Stumpjumper FSR, 2013 Trek Fuel EX.
Where each sits in its class
Specialized Stumpjumper FSRTrek 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 FSRS-Works | Trek Fuel EX5 |
|---|---|---|
| Fork | Specialized Future Shock S140TA | RockShox Recon |
| Rear shock | Fox Brain Shock | not listed |
| Shifter | SRAM XX | SRAM X5 |
| Derailleur | SRAM X.0, SRAM XX XX SL | SRAM X-5 |
| Cassette | SRAM XX | SRAM PG-1030 |
| Chain | SRAM PC-1090 | not listed |
| Wheelset | Roval Control | Formula DC-20 |
| Tire | Specialized S-Works Purgatory, Specialized Captain Control | Bontrager XR3 |
| Hub | Roval Control SL | not listed |
| Brake | Avid XX | Hayes Dyno Sport |
| Stem | Syntace F109 | not listed |
| Saddle | Specialized Henge Expert | Bontrager Evoke 1 |
| Frame | not listed | Trek Alpha Platinum |
| Crankset | not listed | SRAM S800 |
| Headset | not listed | FSA NO.57SC |
| Seatpost | not listed | Bontrager SSR |
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