2019 Specialized Stumpjumper ST Men's Comp Carbon 27.5 vs 2021 Trek Fuel EX 9.9 Gen 5
The XL is the Trek Fuel EX 9.9 Gen 5 size closest to your XL Specialized Stumpjumper ST Men's Comp Carbon 27.5. 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 9.9 Gen 5
Compared with the Specialized Stumpjumper ST Men's Comp Carbon 27.5 in XL, the Trek Fuel EX 9.9 Gen 5 in XL places the top of the head tube 8 mm lower and 10 mm further forward, relative to the bottom bracket. Its wheelbase is 7 mm longer, which can contribute to stability at speed.
- Frame stack
- −8 mm
- Lower front end
- Frame reach
- +10 mm
- Longer frame reach
- Wheelbase
- +7 mm
- Longer: steadier at speed
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- +3 mm
- Longer: more planted
The two frames
Specialized Stumpjumper ST Men's Comp Carbon 27.5, XLTrek Fuel EX 9.9 Gen 5, XLDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Stumpjumper ST Men's Comp Carbon 27.5 XL | Trek Fuel EX 9.9 Gen 5 XL | Difference |
|---|---|---|---|
| Reach | 490mm | 500 | +10 mm |
| Stack | 631mm | 623 | −8 mm |
| Head tube angle | 66.5° | 66.5° | ±0.0° |
| Seat tube angle | 75.2° | 75.5° | +0.3° |
| Effective top tube | 657mm | 662 | +5 mm |
| Chainstay length | 432mm | 435 | +3 mm |
| Wheelbase | 1234mm | 1241 | +7 mm |
| BB drop | 28mm | 27 | −1 mm |
| BB height | 325mm | 346 | +21 mm |
| Standover | 766mm | 776 | +10 mm |
| Seat tube length | 505mm | 500 | −5 mm |
| Fork length | 522mm | not listed | |
| Head tube length | 155mm | 120 | −35 mm |
Differences are the Trek Fuel EX 9.9 Gen 5 minus the Specialized Stumpjumper ST Men's Comp Carbon 27.5. Full charts: 2019 Specialized Stumpjumper ST Men's Comp Carbon 27.5, 2021 Trek Fuel EX 9.9 Gen 5.
Where each sits in its class
Specialized Stumpjumper ST Men's Comp Carbon 27.5Trek Fuel EX 9.9 Gen 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 | Specialized Stumpjumper ST Men's Comp Carbon 27.5Men's Comp Carbon 27.5 12-speed | Trek Fuel EX 9.9 Gen 59.9 X01 AXS Gen 5 |
|---|---|---|
| Fork | Fox FLOAT 34 Rhythm | Fox 36 Factory |
| Rear shock | Fox Float DPS Performance | not listed |
| Shifter | SRAM NX Eagle | SRAM Eagle AXS |
| Derailleur | SRAM NX Eagle | SRAM X01 Eagle AXS |
| Cassette | SRAM NX Eagle | SRAM X01 Eagle |
| Chain | SRAM NX Eagle | SRAM XX1 Eagle |
| Crankset | SRAM NX Eagle | SRAM X01 Eagle |
| Bottom bracket | SRAM DUB | SRAM DUB |
| Tire | Specialized Butcher, Specialized Purgatory | Bontrager XR4 Team Issue |
| Rim | Roval Traverse 27.5 | not listed |
| Brake | SRAM Guide R | SRAM G2 Ultimate |
| Grips | Specialized Sip Grip | not listed |
| Dropper post | X-Fusion Manic | not listed |
| Seatpost | X-Fusion Manic | RockShox Reverb AXS |
| Saddle | Specialized Phenom Comp | Bontrager Arvada |
| Frame | not listed | Trek OCLV |
| Wheelset | not listed | Bontrager Line Pro 30 |
| Handlebar | not listed | Bontrager Line |
| Stem | not listed | Bontrager Line |
| Headset | not listed | Trek Knock Block |
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