2021 Trek Émonda SL Disc Pro vs 2023 Specialized Aethos Expert
The 52 is the Specialized Aethos Expert size closest to your 52 Trek Émonda SL Disc Pro. 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 Pro in 52, the Specialized Aethos Expert in 52 places the top of the head tube 6 mm lower and 3 mm further back, relative to the bottom bracket.
- Frame stack
- −6 mm
- Lower front end
- Frame reach
- −3 mm
- Shorter frame reach
- Wheelbase
- −2 mm
- About the same
- Head angle
- −0.3°
- About the same head angle
- Chainstays
- ±0 mm
- About the same
The two frames
We can't draw these frames yet. The Trek Émonda SL Disc Pro numbers we have for size 52 are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Émonda SL Disc Pro 52 | Specialized Aethos Expert 52 | Difference |
|---|---|---|---|
| Reach | 383 | 380mm | −3 mm |
| Stack | 533 | 527mm | −6 mm |
| Head tube angle | 72.8° | 72.5° | −0.3° |
| Effective top tube | 534 | not listed | |
| Chainstay length | 410 | 410mm | ±0 mm |
| Wheelbase | 977 | 975mm | −2 mm |
| BB drop | 72 | 74mm | +2 mm |
| Standover | 732 | 728mm | −4 mm |
| Seat tube length | 483 | 462mm | −21 mm |
| Head tube length | 121 | 120mm | −1 mm |
| Seat tube angle | not listed | 74° | |
| BB height | not listed | 266mm | |
| Fork length | not listed | 369mm |
Differences are the Specialized Aethos Expert minus the Trek Émonda SL Disc Pro. Full charts: 2021 Trek Émonda SL Disc Pro, 2023 Specialized Aethos Expert.
Where each sits in its class
Trek Émonda SL Disc ProSpecialized 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 Disc ProSL 6 Disc Pro | Specialized Aethos ExpertExpert |
|---|---|---|
| Frame | Trek Ultralight 500 | Specialized Aethos FACT |
| Fork | Trek Émonda SL | not listed |
| Shifter | Shimano Ultegra R8025 | SRAM Rival eTAP AXS |
| Derailleur | Shimano Ultegra R8000 | SRAM Rival eTAP AXS |
| Cassette | Shimano Ultegra R8000 | SRAM Rival |
| Chain | Shimano Ultegra HG701 | SRAM Rival |
| Crankset | Shimano Ultegra R8000 | SRAM Rival AXS Power Meter |
| Wheelset | Bontrager Aeolus Elite 35 | Roval C38 |
| Tire | Bontrager R2 Hard-Case Lite | Specialized S-Works Turbo |
| Brake | Shimano Ultegra | SRAM Rival eTap AXS |
| Handlebar | Bontrager Elite VR-C | not listed |
| Seatpost | Bontrager Seatmast Cap | Roval Alpinist |
| Saddle | Bontrager Aeolus | Specialized Power Expert |
| Bottom bracket | not listed | SRAM DUB |
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