2021 Trek Fuel EX vs 2020 Specialized Stumpjumper 27.5
The L is the Specialized Stumpjumper 27.5 size closest to your ML 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 27.5
Compared with the Trek Fuel EX in ML, the Specialized Stumpjumper 27.5 in L places the top of the head tube 14 mm higher and 5 mm further back, relative to the bottom bracket. Its wheelbase is 17 mm longer, which can contribute to stability at speed.
- Frame stack
- +14 mm
- Higher front end
- Frame reach
- −5 mm
- Shorter frame reach
- Wheelbase
- +17 mm
- Longer: steadier at speed
- Head angle
- −1.0°
- Slacker: calmer steering
- Chainstays
- −4 mm
- Shorter: livelier
The two frames
Trek Fuel EX, MLSpecialized Stumpjumper 27.5, LDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Trek Fuel EX ML | Specialized Stumpjumper 27.5 L | Difference |
|---|---|---|---|
| Reach | 460 | 455mm | −5 mm |
| Stack | 609 | 623mm | +14 mm |
| Head tube angle | 66.5° | 65.5° | −1.0° |
| Seat tube angle | 75.5° | 74.6° | −0.9° |
| Effective top tube | 618 | not listed | |
| Chainstay length | 436 | 432mm | −4 mm |
| Wheelbase | 1195 | 1212mm | +17 mm |
| BB drop | 28 | 21mm | −7 mm |
| BB height | 346 | 336mm | −10 mm |
| Standover | 751 | 758mm | +7 mm |
| Seat tube length | 435 | 455mm | +20 mm |
| Head tube length | 105 | 140mm | +35 mm |
| Fork length | not listed | 542mm |
Differences are the Specialized Stumpjumper 27.5 minus the Trek Fuel EX. Full charts: 2021 Trek Fuel EX, 2020 Specialized Stumpjumper 27.5.
Where each sits in its class
Trek Fuel EXSpecialized Stumpjumper 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 EX5 Deore | Specialized Stumpjumper 27.5S-Works 27.5 |
|---|---|---|
| Frame | Trek Alpha Platinum | not listed |
| Fork | RockShox Recon Silver | Fox FLOAT Rhythm |
| Rear shock | X-Fusion Pro 2 | Fox FLOAT DPX2 Factory |
| Shifter | Shimano Deore XT Di2 | Shimano XTR M9100 |
| Derailleur | Shimano Deore | Shimano XTR M9100 |
| Cassette | Shimano Deore M6100 | Shimano XTR M9100 |
| Crankset | Shimano MT511 | Race Face Next |
| Wheelset | Alex Rims MD35 | Roval Traverse SL |
| Tire | Bontrager XR4 | Specialized Butcher, Specialized Eliminator |
| Brake | Shimano MT200 | Shimano XTR M9120 |
| Rotor | Shimano SM-RT56 | not listed |
| Dropper post | TranzX JD-YSP18 | not listed |
| Chain | not listed | Shimano XTR M9100 |
| Stem | not listed | Specialized Deity |
| Grips | not listed | Specialized Deity |
| Seatpost | not listed | Fox Transfer |
| Saddle | not listed | Specialized Myth 155 |
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