2021 Trek Émonda SL Disc vs 2023 Specialized Aethos Expert
The 49 is the Specialized Aethos Expert size closest to your 47 Trek Émonda SL Disc. 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 Aethos Expert
Compared with the Trek Émonda SL Disc in 47, the Specialized Aethos Expert in 49 places the top of the head tube 7 mm higher and about as far forward, relative to the bottom bracket.
- Frame stack
- +7 mm
- Higher front end
- Frame reach
- +2 mm
- About the same reach
- Wheelbase
- +1 mm
- About the same
- Head angle
- −0.3°
- Slacker: calmer steering
- Chainstays
- ±0 mm
- About the same
The two frames
We can't draw these frames yet. The Trek Émonda SL Disc numbers we have for size 47 are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Émonda SL Disc 47 | Specialized Aethos Expert 49 | Difference |
|---|---|---|---|
| Reach | 373 | 375mm | +2 mm |
| Stack | 507 | 514mm | +7 mm |
| Head tube angle | 72.1° | 71.75° | −0.3° |
| Effective top tube | 512 | not listed | |
| Chainstay length | 410 | 410mm | ±0 mm |
| Wheelbase | 972 | 973mm | +1 mm |
| BB drop | 72 | 74mm | +2 mm |
| Standover | 692 | 705mm | +13 mm |
| Seat tube length | 424 | 431mm | +7 mm |
| Head tube length | 100 | 109mm | +9 mm |
| Seat tube angle | not listed | 75.5° | |
| BB height | not listed | 266mm | |
| Fork length | not listed | 369mm |
Differences are the Specialized Aethos Expert minus the Trek Émonda SL Disc. Full charts: 2021 Trek Émonda SL Disc, 2023 Specialized Aethos Expert.
Where each sits in its class
Trek Émonda SL DiscSpecialized Aethos Expert
Each bike is ranked against the other road 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 Émonda SL DiscSL 5 Disc | Specialized Aethos ExpertExpert |
|---|---|---|
| Frame | Trek Ultralight 500 | Specialized Aethos FACT |
| Fork | Trek Émonda SL | not listed |
| Shifter | Shimano 105 R7025 | SRAM Rival eTAP AXS |
| Derailleur | Shimano 105 R7000 | SRAM Rival eTAP AXS |
| Cassette | Shimano 105 R7000 | SRAM Rival |
| Chain | Shimano 105 HG601 | SRAM Rival |
| Crankset | Shimano 105 R7000 | SRAM Rival AXS Power Meter |
| Tire | Bontrager R1 Hard-Case Lite | Specialized S-Works Turbo |
| Rim | Bontrager Affinity | not listed |
| Brake | Shimano 105 | SRAM Rival eTap AXS |
| Handlebar | Bontrager Comp VR-C | not listed |
| Seatpost | Bontrager Seatmast Cap | Roval Alpinist |
| Saddle | Bontrager P3 Verse | Specialized Power Expert |
| Bottom bracket | not listed | SRAM DUB |
| Wheelset | not listed | Roval C38 |
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