2018 Trek Fuel EX 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 18.5 Trek Fuel EX. 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 in 18.5, the Specialized Stumpjumper ST Men's Comp Carbon 27.5 in M places the top of the head tube 19 mm lower and about as far forward, relative to the bottom bracket. Its wheelbase is 4 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −19 mm
- Lower front end
- Frame reach
- +1 mm
- About the same reach
- Wheelbase
- −4 mm
- Shorter: quicker to change direction
- Head angle
- −0.5°
- Slacker: calmer steering
- Chainstays
- −1 mm
- About the same
The two frames
We can't draw these frames yet. The Trek Fuel EX numbers we have for size 18.5 are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Fuel EX 18.5 | Specialized Stumpjumper ST Men's Comp Carbon 27.5 M | Difference |
|---|---|---|---|
| Reach | 443 | 444mm | +1 mm |
| Stack | 609 | 590mm | −19 mm |
| Head tube angle | 67 | 66.5° | −0.5° |
| Effective top tube | 618 | 591mm | −27 mm |
| Chainstay length | 433 | 432mm | −1 mm |
| Wheelbase | 1174 | 1170mm | −4 mm |
| BB drop | 39 | 28mm | −11 mm |
| BB height | 335 | 325mm | −10 mm |
| Standover | 735 | 735mm | ±0 mm |
| Seat tube length | 440 | 410mm | −30 mm |
| Head tube length | not listed | 110mm | |
| Seat tube angle | not listed | 76° | |
| Fork length | not listed | 522mm |
Differences are the Specialized Stumpjumper ST Men's Comp Carbon 27.5 minus the Trek Fuel EX. Full charts: 2018 Trek Fuel EX, 2019 Specialized Stumpjumper ST Men's Comp Carbon 27.5.
Where each sits in its class
Trek Fuel EXSpecialized 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 | Specialized Stumpjumper ST Men's Comp Carbon 27.5Men's Comp Carbon 27.5 12-speed |
|---|---|---|
| Fork | not listed | Fox FLOAT 34 Rhythm |
| Rear shock | not listed | Fox Float DPS Performance |
| Shifter | not listed | SRAM NX Eagle |
| Derailleur | not listed | SRAM NX Eagle |
| Cassette | not listed | SRAM NX Eagle |
| Chain | not listed | SRAM NX Eagle |
| Crankset | not listed | SRAM NX Eagle |
| Bottom bracket | not listed | SRAM DUB |
| Tire | not listed | Specialized Butcher, Specialized Purgatory |
| Rim | not listed | Roval Traverse 27.5 |
| Brake | not listed | SRAM Guide R |
| Grips | not listed | Specialized Sip Grip |
| Dropper post | not listed | X-Fusion Manic |
| Seatpost | not listed | X-Fusion Manic |
| Saddle | not listed | Specialized Phenom Comp |
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