2023 Trek Fuel EXe 9.8 vs 2025 Specialized Turbo Levo 4 Expert
The S4 is the Specialized Turbo Levo 4 Expert size closest to your M Trek Fuel EXe 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 Turbo Levo 4 Expert
Compared with the Trek Fuel EXe 9.8 in M, the Specialized Turbo Levo 4 Expert in S4 places the top of the head tube 13 mm higher and 21 mm further forward, relative to the bottom bracket.
- Frame stack
- +13 mm
- Higher front end
- Frame reach
- +21 mm
- Longer frame reach
- Wheelbase
- n/a
- One of the bikes has no number for this
- Head angle
- n/a
- One of the bikes has no number for this
- Chainstays
- −3 mm
- Shorter: livelier
The two frames
Only the Trek Fuel EXe 9.8 is drawn. The Specialized Turbo Levo 4 Expert numbers we have for size S4 are missing the head angle and wheelbase.
Geometry side by side
| Measurement | Trek Fuel EXe 9.8 M | Specialized Turbo Levo 4 Expert S4 | Difference |
|---|---|---|---|
| Reach | 459 | 480mm | +21 mm |
| Stack | 625 | 638mm | +13 mm |
| Head tube angle | 65.3° | not listed | |
| Seat tube angle | 77.3° | 77° | −0.3° |
| Effective top tube | 599 | not listed | |
| Chainstay length | 438 | 435mm | −3 mm |
| Wheelbase | 1216 | not listed | |
| BB drop | 32 | not listed | |
| BB height | 341 | not listed | |
| Standover | 733 | not listed | |
| Seat tube length | 410 | not listed | |
| Head tube length | 110 | not listed |
Differences are the Specialized Turbo Levo 4 Expert minus the Trek Fuel EXe 9.8. Full charts: 2023 Trek Fuel EXe 9.8, 2025 Specialized Turbo Levo 4 Expert.
Where each sits in its class
Trek Fuel EXe 9.8Specialized Turbo Levo 4 Expert
Each bike is ranked against the other trail bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.
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