2020 Trek Fuel EX 9.8 vs 2019 Specialized Stumpjumper ST Men's Comp Carbon 27.5
The M is the Specialized Stumpjumper ST Men's Comp Carbon 27.5 size closest to your M Trek Fuel EX 9.8. 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 Men's Comp Carbon 27.5
Compared with the Trek Fuel EX 9.8 in M, the Specialized Stumpjumper ST Men's Comp Carbon 27.5 in M places the top of the head tube 15 mm lower and about as far forward, relative to the bottom bracket. Its wheelbase is 8 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −15 mm
- Lower front end
- Frame reach
- −1 mm
- About the same reach
- Wheelbase
- −8 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 9.8, MSpecialized Stumpjumper ST Men's Comp Carbon 27.5, MDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Trek Fuel EX 9.8 M | Specialized Stumpjumper ST Men's Comp Carbon 27.5 M | Difference |
|---|---|---|---|
| Reach | 445 | 444mm | −1 mm |
| Stack | 605 | 590mm | −15 mm |
| Head tube angle | 66.5° | 66.5° | ±0.0° |
| Seat tube angle | 75.5° | 76° | +0.5° |
| Effective top tube | 602 | 591mm | −11 mm |
| Chainstay length | 435 | 432mm | −3 mm |
| Wheelbase | 1178 | 1170mm | −8 mm |
| BB drop | 28 | 28mm | ±0 mm |
| BB height | 346 | 325mm | −21 mm |
| Standover | 747 | 735mm | −12 mm |
| Seat tube length | 420 | 410mm | −10 mm |
| Head tube length | 100 | 110mm | +10 mm |
| Fork length | not listed | 522mm |
Differences are the Specialized Stumpjumper ST Men's Comp Carbon 27.5 minus the Trek Fuel EX 9.8. Full charts: 2020 Trek Fuel EX 9.8, 2019 Specialized Stumpjumper ST Men's Comp Carbon 27.5.
Where each sits in its class
Trek Fuel EX 9.8Specialized Stumpjumper ST Men's Comp Carbon 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 9.89.8 | Specialized Stumpjumper ST Men's Comp Carbon 27.5Men's Comp Carbon 27.5 12-speed |
|---|---|---|
| Frame | Trek Fuel EX | not listed |
| Fork | Fox 36 Performance | Fox FLOAT 34 Rhythm |
| Rear shock | Fox Float | Fox Float DPS Performance |
| Shifter | Shimano XT | SRAM NX Eagle |
| Derailleur | Shimano XT | SRAM NX Eagle |
| Cassette | Shimano XT | SRAM NX Eagle |
| Chain | Shimano XT M8100 | SRAM NX Eagle |
| Crankset | TruVativ Descendant | SRAM NX Eagle |
| Chainring | TruVativ Descendant | not listed |
| Bottom bracket | Shimano MT500 | SRAM DUB |
| Wheelset | Bontrager Line | not listed |
| Tire | Bontrager XR4 Team Issue, Michelin Wild AM | Specialized Butcher, Specialized Purgatory |
| Brake | Shimano XT M8020, Shimano SLX M7120 | SRAM Guide R |
| Rotor | Shimano SM-RT66 | not listed |
| Handlebar | Bontrager Line | not listed |
| Stem | Bontrager Line | not listed |
| Grips | Bontrager XR Trail | Specialized Sip Grip |
| Headset | Bontrager Knock Block Integrated | not listed |
| Dropper post | Bontrager Line | X-Fusion Manic |
| Saddle | Bontrager Arvada | Specialized Phenom Comp |
| Rim | not listed | Roval Traverse 27.5 |
| Seatpost | not listed | X-Fusion Manic |
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