2026 Trek Fuel EX 9.8 Gen 7 vs 2024 Specialized Stumpjumper EVO Alloy LTD
The S4 is the Specialized Stumpjumper EVO Alloy LTD size closest to your L Trek Fuel EX 9.8 Gen 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 EVO Alloy LTD
Compared with the Trek Fuel EX 9.8 Gen 7 in L, the Specialized Stumpjumper EVO Alloy LTD in S4 places the top of the head tube 3 mm lower and 10 mm further back, relative to the bottom bracket. Its wheelbase is 13 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −3 mm
- Lower front end
- Frame reach
- −10 mm
- Shorter frame reach
- Wheelbase
- −13 mm
- Shorter: quicker to change direction
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- −1 mm
- About the same
The two frames
Trek Fuel EX 9.8 Gen 7, LSpecialized Stumpjumper EVO Alloy LTD, S4Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Trek Fuel EX 9.8 Gen 7 L | Specialized Stumpjumper EVO Alloy LTD S4 | Difference |
|---|---|---|---|
| Reach | 485 | 475mm | −10 mm |
| Stack | 638 | 635mm | −3 mm |
| Head tube angle | 64.5° | 64.5° | ±0.0° |
| Seat tube angle | 77.4° | 76.9° | −0.5° |
| Effective top tube | 617 | not listed | |
| Chainstay length | 442 | 441mm | −1 mm |
| Wheelbase | 1262 | 1249mm | −13 mm |
| BB drop | 35 | 35mm | ±0 mm |
| BB height | 339 | 340mm | +1 mm |
| Standover | 749 | 760mm | +11 mm |
| Seat tube length | 420 | 425mm | +5 mm |
| Head tube length | 125 | 115mm | −10 mm |
Differences are the Specialized Stumpjumper EVO Alloy LTD minus the Trek Fuel EX 9.8 Gen 7. Full charts: 2026 Trek Fuel EX 9.8 Gen 7, 2024 Specialized Stumpjumper EVO Alloy LTD.
Where each sits in its class
Trek Fuel EX 9.8 Gen 7Specialized Stumpjumper EVO Alloy LTD
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 Gen 79.8 Eagle 90 Gen 7 | Specialized Stumpjumper EVO Alloy LTDAlloy LTD |
|---|---|---|
| Frame | Trek Fuel EX | not listed |
| Fork | RockShox Lyrik Ultimate | Fox 36 Factory |
| Rear shock | RockShox Deluxe Ultimate | Fox Float X Factory |
| Shifter | SRAM Eagle 90 Transmission | SRAM GX Eagle |
| Derailleur | SRAM Eagle 90 Transmission | SRAM GX Eagle AXS |
| Cassette | SRAM GX Eagle Transmission | SRAM X01 Eagle |
| Crankset | SRAM Eagle 90 Transmission | SRAM GX Eagle |
| Chainring | SRAM Eagle 90 Transmission | not listed |
| Wheelset | Bontrager Line Comp 30 | Specialized Alloy |
| Tire | Maxxis Minion DHR II | Specialized Butcher, Specialized Eliminator |
| Brake | SRAM Maven Bronze | SRAM Code RS |
| Handlebar | Race Face ERA | not listed |
| Stem | Bontrager Elite | Trail |
| Grips | Trek Line Elite | Deity Lockjaw |
| Dropper post | Bontrager Line | X-Fusion Manic |
| Saddle | Bontrager Verse | Bridge |
| Chain | not listed | SRAM GX Eagle |
| Bottom bracket | not listed | SRAM DUB |
| Hub | not listed | Roval DT Swiss 370 |
| Rim | not listed | Roval Traverse |
| Headset | not listed | Angle Adjust |
| Seatpost | not listed | X-Fusion Manic |
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