2018 Trek Fuel EX vs 2020 Specialized Fuse 27.5
The XL is the Specialized Fuse 27.5 size closest to your 21.5 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 Fuse 27.5
Compared with the Trek Fuel EX in 21.5, the Specialized Fuse 27.5 in XL places the top of the head tube 12 mm higher and about as far forward, relative to the bottom bracket.
- Frame stack
- +12 mm
- Higher front end
- Frame reach
- ±0 mm
- About the same reach
- Wheelbase
- −2 mm
- About the same
- Head angle
- −1.0°
- Slacker: calmer steering
- Chainstays
- −3 mm
- Shorter: livelier
The two frames
We can't draw these frames yet. The Trek Fuel EX numbers we have for size 21.5 are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Fuel EX 21.5 | Specialized Fuse 27.5 XL | Difference |
|---|---|---|---|
| Reach | 480 | 480mm | ±0 mm |
| Stack | 618 | 630mm | +12 mm |
| Head tube angle | 67 | 66° | −1.0° |
| Effective top tube | 657 | not listed | |
| Chainstay length | 433 | 430mm | −3 mm |
| Wheelbase | 1215 | 1213mm | −2 mm |
| BB drop | 39 | not listed | |
| BB height | 335 | not listed | |
| Standover | 740 | 789mm | +49 mm |
| Seat tube length | 510 | 505mm | −5 mm |
| Head tube length | 110 | 135mm | +25 mm |
| Seat tube angle | not listed | 74° | |
| Fork length | not listed | 520mm |
Differences are the Specialized Fuse 27.5 minus the Trek Fuel EX. Full charts: 2018 Trek Fuel EX, 2020 Specialized Fuse 27.5.
Where each sits in its class
Trek Fuel EXSpecialized Fuse 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 Fuse 27.527.5 |
|---|---|---|
| Fork | not listed | RockShox Judy |
| Shifter | not listed | Shimano Deore |
| Derailleur | not listed | Shimano Deore |
| Chain | not listed | KMC X10 |
| Crankset | not listed | Specialized Stout |
| Wheelset | not listed | Specialized Stout |
| Tire | not listed | Specialized Butcher GRID, Specialized Slaughter GRID |
| Brake | not listed | Tektro HD-M275 |
| Handlebar | not listed | Specialized Stout |
| Stem | not listed | Specialized Stout |
| Seatpost | not listed | TranzX Dropper |
| Saddle | not listed | Specialized Bridge Saddle |
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