2021 Trek Fuel EX 9.9 Gen 5 vs 2020 Specialized Stumpjumper 27.5
The Specialized Stumpjumper 27.5 size closest to your M is the M. Compare the M instead
What changes on the Specialized Stumpjumper 27.5
Compared with the Trek Fuel EX 9.9 Gen 5 in M, the Specialized Stumpjumper 27.5 in XS places the top of the head tube 24 mm lower and 40 mm further back, relative to the bottom bracket. Its wheelbase is 51 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −24 mm
- Lower front end
- Frame reach
- −40 mm
- Shorter frame reach
- Wheelbase
- −51 mm
- Shorter: quicker to change direction
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- −3 mm
- Shorter: livelier
The two frames
Trek Fuel EX 9.9 Gen 5, MSpecialized Stumpjumper 27.5, XSDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Trek Fuel EX 9.9 Gen 5 M | Specialized Stumpjumper 27.5 XS | Difference |
|---|---|---|---|
| Reach | 445 | 405mm | −40 mm |
| Stack | 605 | 581mm | −24 mm |
| Head tube angle | 66.5° | 66.5° | ±0.0° |
| Seat tube angle | 75.5° | 76.5° | +1.0° |
| Effective top tube | 602 | not listed | |
| Chainstay length | 435 | 432mm | −3 mm |
| Wheelbase | 1178 | 1127mm | −51 mm |
| BB drop | 28 | 28mm | ±0 mm |
| BB height | 346 | 325mm | −21 mm |
| Standover | 747 | 742mm | −5 mm |
| Seat tube length | 420 | 380mm | −40 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 9.9 Gen 5. Full charts: 2021 Trek Fuel EX 9.9 Gen 5, 2020 Specialized Stumpjumper 27.5.
Where each sits in its class
Trek Fuel EX 9.9 Gen 5Specialized 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 9.9 Gen 59.9 X01 AXS Gen 5 | Specialized Stumpjumper 27.5S-Works 27.5 |
|---|---|---|
| Frame | Trek OCLV | not listed |
| Fork | Fox 36 Factory | Fox FLOAT Rhythm |
| Shifter | SRAM Eagle AXS | Shimano XTR M9100 |
| Derailleur | SRAM X01 Eagle AXS | Shimano XTR M9100 |
| Cassette | SRAM X01 Eagle | Shimano XTR M9100 |
| Chain | SRAM XX1 Eagle | Shimano XTR M9100 |
| Crankset | SRAM X01 Eagle | Race Face Next |
| Bottom bracket | SRAM DUB | not listed |
| Wheelset | Bontrager Line Pro 30 | Roval Traverse SL |
| Tire | Bontrager XR4 Team Issue | Specialized Butcher, Specialized Eliminator |
| Brake | SRAM G2 Ultimate | Shimano XTR M9120 |
| Handlebar | Bontrager Line | not listed |
| Stem | Bontrager Line | Specialized Deity |
| Headset | Trek Knock Block | not listed |
| Seatpost | RockShox Reverb AXS | Fox Transfer |
| Saddle | Bontrager Arvada | Specialized Myth 155 |
| Rear shock | not listed | Fox FLOAT DPX2 Factory |
| Grips | not listed | Specialized Deity |
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