2022 Trek Émonda SL Disc Pro vs 2024 Specialized Aethos FACT 12r Carbon
The 49 is the Specialized Aethos FACT 12r Carbon size closest to your 47 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 FACT 12r Carbon
Compared with the Trek Émonda SL Disc Pro in 47, the Specialized Aethos FACT 12r Carbon 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 Pro 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 Pro 47 | Specialized Aethos FACT 12r Carbon 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 FACT 12r Carbon minus the Trek Émonda SL Disc Pro. Full charts: 2022 Trek Émonda SL Disc Pro, 2024 Specialized Aethos FACT 12r Carbon.
Where each sits in its class
Trek Émonda SL Disc ProSpecialized Aethos FACT 12r Carbon
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 FACT 12r CarbonS-Works FACT 12r Carbon |
|---|---|---|
| Frame | Trek Ultralight 500 | Specialized S-Works Aethos FACT |
| Fork | Trek Émonda SL | not listed |
| Shifter | Shimano Ultegra R8025 | not listed |
| Derailleur | Shimano Ultegra R8000 | not listed |
| Cassette | Shimano Ultegra R8000 | not listed |
| Chain | Shimano Ultegra HG701 | not listed |
| Crankset | Shimano Ultegra R8000 | not listed |
| Wheelset | Bontrager Aeolus Elite 35 | not listed |
| Tire | Bontrager R2 Hard-Case Lite | not listed |
| Brake | Shimano Ultegra | not listed |
| Handlebar | Bontrager Elite VR-C | not listed |
| Seatpost | Bontrager Seatmast Cap | Roval Alpinist |
| Saddle | Bontrager Aeolus | not listed |
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