2021 Specialized Aethos Expert vs 2023 Trek Émonda SLR Disc Frameset
The 54 is the Trek Émonda SLR Disc Frameset size closest to your 54 Specialized Aethos Expert. 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 Trek Émonda SLR Disc Frameset
Compared with the Specialized Aethos Expert in 54, the Trek Émonda SLR Disc Frameset in 54 places the top of the head tube 3 mm lower and about as far forward, relative to the bottom bracket. Its wheelbase is 3 mm longer, which can contribute to stability at speed.
- Frame stack
- −3 mm
- Lower front end
- Frame reach
- +2 mm
- About the same reach
- Wheelbase
- +3 mm
- Longer: steadier at speed
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- ±0 mm
- About the same
The two frames
Only the Specialized Aethos Expert is drawn. The Trek Émonda SLR Disc Frameset numbers we have for size 54 are missing the seat angle.
Geometry side by side
| Measurement | Specialized Aethos Expert 54 | Trek Émonda SLR Disc Frameset 54 | Difference |
|---|---|---|---|
| Reach | 384mm | 386 | +2 mm |
| Stack | 544mm | 541 | −3 mm |
| Head tube angle | 73° | 73.0° | ±0.0° |
| Seat tube angle | 74° | not listed | |
| Chainstay length | 410mm | 410 | ±0 mm |
| Wheelbase | 978mm | 981 | +3 mm |
| BB drop | 72mm | 70 | −2 mm |
| BB height | 268mm | not listed | |
| Standover | 748mm | 744 | −4 mm |
| Seat tube length | 481mm | 496 | +15 mm |
| Fork length | 369mm | not listed | |
| Head tube length | 137mm | 131 | −6 mm |
| Effective top tube | not listed | 543 |
Differences are the Trek Émonda SLR Disc Frameset minus the Specialized Aethos Expert. Full charts: 2021 Specialized Aethos Expert, 2023 Trek Émonda SLR Disc Frameset.
Where each sits in its class
Specialized Aethos ExpertTrek Émonda SLR Disc Frameset
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 | Specialized Aethos ExpertExpert | Trek Émonda SLR Disc FramesetSLR Disc Frameset |
|---|---|---|
| Frame | Specialized Aethos FACT | Trek Ultralight 800 |
| Shifter | Shimano Ultegra Di2 | not listed |
| Derailleur | Shimano Ultegra R8050 Di2 | Trek derailleurs must have |
| Cassette | Shimano Ultegra R8000 | not listed |
| Chain | Shimano Ultegra | not listed |
| Crankset | Shimano Ultegra R8000 | not listed |
| Pedals | Specialized PROVIDED BY | not listed |
| Wheelset | DT Swiss R470 | not listed |
| Tire | Specialized S-Works Turbo | not listed |
| Brake | Shimano 105 | not listed |
| Seatpost | Roval Alpinist | not listed |
| Saddle | Specialized Power Expert | not listed |
| Fork | not listed | Trek Emonda SLR |
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