2021 Trek Fuel EX 9.7 vs 2020 Specialized Stumpjumper 27.5
The XS is the Specialized Stumpjumper 27.5 size closest to your S Trek Fuel EX 9.7. 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 27.5
Compared with the Trek Fuel EX 9.7 in S, the Specialized Stumpjumper 27.5 in XS places the top of the head tube 13 mm higher and 15 mm further back, relative to the bottom bracket. Its wheelbase is 16 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- +13 mm
- Higher front end
- Frame reach
- −15 mm
- Shorter frame reach
- Wheelbase
- −16 mm
- Shorter: quicker to change direction
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- −4 mm
- Shorter: livelier
The two frames
Trek Fuel EX 9.7, SSpecialized Stumpjumper 27.5, XSDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Trek Fuel EX 9.7 S | Specialized Stumpjumper 27.5 XS | Difference |
|---|---|---|---|
| Reach | 420 | 405mm | −15 mm |
| Stack | 568 | 581mm | +13 mm |
| Head tube angle | 66.5° | 66.5° | ±0.0° |
| Seat tube angle | 75.5° | 76.5° | +1.0° |
| Effective top tube | 567 | not listed | |
| Chainstay length | 436 | 432mm | −4 mm |
| Wheelbase | 1143 | 1127mm | −16 mm |
| BB drop | 14 | 28mm | +14 mm |
| BB height | 341 | 325mm | −16 mm |
| Standover | 708 | 742mm | +34 mm |
| Seat tube length | 395 | 380mm | −15 mm |
| Head tube length | 100 | 100mm | ±0 mm |
| Fork length | not listed | 522mm |
Differences are the Specialized Stumpjumper 27.5 minus the Trek Fuel EX 9.7. Full charts: 2021 Trek Fuel EX 9.7, 2020 Specialized Stumpjumper 27.5.
Where each sits in its class
Trek Fuel EX 9.7Specialized Stumpjumper 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 9.79.7 | Specialized Stumpjumper 27.5S-Works 27.5 |
|---|---|---|
| Frame | Trek OCLV | not listed |
| Fork | Fox 36 Rhythm | Fox FLOAT Rhythm |
| Shifter | SRAM NX Eagle | Shimano XTR M9100 |
| Derailleur | SRAM GX Eagle | Shimano XTR M9100 |
| Cassette | SRAM NX Eagle | Shimano XTR M9100 |
| Chain | SRAM NX Eagle | Shimano XTR M9100 |
| Crankset | TruVativ Descendant | Race Face Next |
| Bottom bracket | SRAM DUB | not listed |
| Wheelset | Bontrager Line Comp 30 | Roval Traverse SL |
| Tire | Bontrager XR4 Team Issue | Specialized Butcher, Specialized Eliminator |
| Brake | Shimano MT420 4-Piston | Shimano XTR M9120 |
| Handlebar | Bontrager Line | not listed |
| Stem | Bontrager Line | Specialized Deity |
| Headset | Trek Knock Block | not listed |
| Seatpost | Bontrager Line Dropper | Fox Transfer |
| Saddle | Bontrager Arvada | Specialized Myth 155 |
| Rear shock | not listed | Fox FLOAT DPX2 Factory |
| Grips | not listed | Specialized Deity |
Know what is on every bike.
Add your bike to Quiver. Keep its parts, setup, and service history together, then share your build.
Explore the app
