2022 Trek Fuel EX 9.9 Gen 5 vs 2020 Specialized Stumpjumper ST Alloy 27.5
The M is the Specialized Stumpjumper ST Alloy 27.5 size closest to your M Trek Fuel EX 9.9 Gen 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 Specialized Stumpjumper ST Alloy 27.5
Compared with the Trek Fuel EX 9.9 Gen 5 in M, the Specialized Stumpjumper ST Alloy 27.5 in M places the top of the head tube 9 mm lower and 10 mm further back, relative to the bottom bracket.
- Frame stack
- −9 mm
- Lower front end
- Frame reach
- −10 mm
- Shorter frame reach
- Wheelbase
- +1 mm
- About the same
- Head angle
- −1.0°
- Slacker: calmer steering
- Chainstays
- −3 mm
- Shorter: livelier
The two frames
Trek Fuel EX 9.9 Gen 5, MSpecialized Stumpjumper ST Alloy 27.5, MDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Trek Fuel EX 9.9 Gen 5 M | Specialized Stumpjumper ST Alloy 27.5 M | Difference |
|---|---|---|---|
| Reach | 445 | 435mm | −10 mm |
| Stack | 605 | 596mm | −9 mm |
| Head tube angle | 66.5° | 65.5° | −1.0° |
| Seat tube angle | 75.5° | 75° | −0.5° |
| Effective top tube | 602 | not listed | |
| Chainstay length | 435 | 432mm | −3 mm |
| Wheelbase | 1178 | 1179mm | +1 mm |
| BB drop | 28 | 21mm | −7 mm |
| BB height | 346 | 336mm | −10 mm |
| Standover | 747 | 757mm | +10 mm |
| Seat tube length | 420 | 410mm | −10 mm |
| Head tube length | 100 | 110mm | +10 mm |
| Fork length | not listed | 542mm |
Differences are the Specialized Stumpjumper ST Alloy 27.5 minus the Trek Fuel EX 9.9 Gen 5. Full charts: 2022 Trek Fuel EX 9.9 Gen 5, 2020 Specialized Stumpjumper ST Alloy 27.5.
Where each sits in its class
Trek Fuel EX 9.9 Gen 5Specialized Stumpjumper ST Alloy 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 ST Alloy 27.5 |
|---|---|---|
| Frame | Trek OCLV | not listed |
| Fork | Fox 36 Factory | not listed |
| Shifter | SRAM Eagle AXS | not listed |
| Derailleur | SRAM X01 Eagle AXS | not listed |
| Cassette | SRAM X01 Eagle | not listed |
| Chain | SRAM XX1 Eagle | not listed |
| Crankset | SRAM X01 Eagle | not listed |
| Bottom bracket | SRAM DUB | not listed |
| Wheelset | Bontrager Line Pro 30 | not listed |
| Tire | Bontrager XR4 Team Issue | not listed |
| Brake | SRAM G2 Ultimate | not listed |
| Handlebar | Bontrager Line | not listed |
| Stem | Bontrager Line | not listed |
| Headset | Trek Knock Block | not listed |
| Seatpost | RockShox Reverb AXS | not listed |
| Saddle | Bontrager Arvada | not listed |
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