2022 Trek Émonda SLR vs 2024 Specialized Aethos FACT 12r Carbon
The 52 is the Specialized Aethos FACT 12r Carbon size closest to your 52 Trek Émonda SLR. 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 SLR in 52, the Specialized Aethos FACT 12r Carbon 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 SLR numbers we have for size 52 are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Émonda SLR 52 | Specialized Aethos FACT 12r Carbon 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 FACT 12r Carbon minus the Trek Émonda SLR. Full charts: 2022 Trek Émonda SLR, 2024 Specialized Aethos FACT 12r Carbon.
Where each sits in its class
Trek Émonda SLRSpecialized 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 SLR | Specialized Aethos FACT 12r CarbonS-Works FACT 12r Carbon |
|---|---|---|
| Frame | not listed | Specialized S-Works Aethos FACT |
| Seatpost | not listed | Roval Alpinist |
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