2017 Trek Fuel EX 9.8 27.5 Plus vs 2019 Specialized Stumpjumper ST Men's Comp Carbon 27.5
The S is the Specialized Stumpjumper ST Men's Comp Carbon 27.5 size closest to your S Trek Fuel EX 9.8 27.5 Plus. 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 Specialized Stumpjumper ST Men's Comp Carbon 27.5
Compared with the Trek Fuel EX 9.8 27.5 Plus in S, the Specialized Stumpjumper ST Men's Comp Carbon 27.5 in S places the top of the head tube 21 mm lower and 26 mm further forward, relative to the bottom bracket. Its wheelbase is 28 mm longer, which can contribute to stability at speed.
- Frame stack
- −21 mm
- Lower front end
- Frame reach
- +26 mm
- Longer frame reach
- Wheelbase
- +28 mm
- Longer: steadier at speed
- Head angle
- −0.7°
- Slacker: calmer steering
- Chainstays
- −1 mm
- About the same
The two frames
Trek Fuel EX 9.8 27.5 Plus, SSpecialized Stumpjumper ST Men's Comp Carbon 27.5, SDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Trek Fuel EX 9.8 27.5 Plus S | Specialized Stumpjumper ST Men's Comp Carbon 27.5 S | Difference |
|---|---|---|---|
| Reach | 399 | 425mm | +26 mm |
| Stack | 607 | 586mm | −21 mm |
| Head tube angle | 67.2° | 66.5° | −0.7° |
| Seat tube angle | 74.2° | 76.3° | +2.1° |
| Effective top tube | 565 | 568mm | +3 mm |
| Chainstay length | 433 | 432mm | −1 mm |
| Wheelbase | 1121 | 1149mm | +28 mm |
| BB drop | 30 | 28mm | −2 mm |
| BB height | 325 | 325mm | ±0 mm |
| Standover | 767 | 731mm | −36 mm |
| Seat tube length | 394 | 380mm | −14 mm |
| Head tube length | 100 | 105mm | +5 mm |
| Fork length | not listed | 522mm |
Differences are the Specialized Stumpjumper ST Men's Comp Carbon 27.5 minus the Trek Fuel EX 9.8 27.5 Plus. Full charts: 2017 Trek Fuel EX 9.8 27.5 Plus, 2019 Specialized Stumpjumper ST Men's Comp Carbon 27.5.
Where each sits in its class
Trek Fuel EX 9.8 27.5 PlusSpecialized Stumpjumper ST Men's Comp Carbon 27.5
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 | Trek Fuel EX 9.8 27.5 Plus9.8 27.5 Plus | Specialized Stumpjumper ST Men's Comp Carbon 27.5Men's Comp Carbon 27.5 12-speed |
|---|---|---|
| Frame | Trek OCLV | not listed |
| Fork | Fox 34 Float Performance | Fox FLOAT 34 Rhythm |
| Shifter | Shimano XT M8000 | SRAM NX Eagle |
| Derailleur | Shimano Deore XT | SRAM NX Eagle |
| Cassette | Shimano Deore XT | SRAM NX Eagle |
| Chain | Shimano Deore XT | SRAM NX Eagle |
| Crankset | Shimano Deore XT | SRAM NX Eagle |
| Bottom bracket | Trek PF92 | SRAM DUB |
| Wheelset | DT Swiss 350 centerlock | not listed |
| Tire | Bontrager Chupacabra | Specialized Butcher, Specialized Purgatory |
| Hub | DT Swiss 350 centerlock | not listed |
| Rim | Sun Ringlé Duroc 40 SL | Roval Traverse 27.5 |
| Brake | Shimano Deore XT | SRAM Guide R |
| Handlebar | Bontrager Line | not listed |
| Stem | Bontrager Line | not listed |
| Headset | Trek Knock Block | not listed |
| Seatpost | RockShox Reverb Stealth | X-Fusion Manic |
| Saddle | Bontrager Evoke 3 | Specialized Phenom Comp |
| Rear shock | not listed | Fox Float DPS Performance |
| Grips | not listed | Specialized Sip Grip |
| Dropper post | not listed | X-Fusion Manic |
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