2021 Trek Émonda SLR vs 2023 Specialized Aethos Expert
The 56 is the Specialized Aethos Expert size closest to your 56 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 Expert
Compared with the Trek Émonda SLR in 56, the Specialized Aethos Expert in 56 places the top of the head tube at about the same height and 4 mm further forward, relative to the bottom bracket. Its wheelbase is 8 mm longer, which can contribute to stability at speed.
- Frame stack
- +2 mm
- About the same height
- Frame reach
- +4 mm
- Longer frame reach
- Wheelbase
- +8 mm
- Longer: steadier at speed
- Head angle
- ±0.0°
- 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 56 are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek Émonda SLR 56 | Specialized Aethos Expert 56 | Difference |
|---|---|---|---|
| Reach | 391 | 395mm | +4 mm |
| Stack | 563 | 565mm | +2 mm |
| Head tube angle | 73.5° | 73.5° | ±0.0° |
| Effective top tube | 559 | not listed | |
| Chainstay length | 410 | 410mm | ±0 mm |
| Wheelbase | 983 | 991mm | +8 mm |
| BB drop | 70 | 72mm | +2 mm |
| Standover | 768 | 769mm | +1 mm |
| Seat tube length | 525 | 504mm | −21 mm |
| Head tube length | 151 | 157mm | +6 mm |
| Seat tube angle | not listed | 73.5° | |
| BB height | not listed | 268mm | |
| Fork length | not listed | 369mm |
Differences are the Specialized Aethos Expert minus the Trek Émonda SLR. Full charts: 2021 Trek Émonda SLR, 2023 Specialized Aethos Expert.
Where each sits in its class
Trek Émonda SLRSpecialized 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 SLRSLR 6 | Specialized Aethos ExpertExpert |
|---|---|---|
| Frame | Trek Ultralight 800 | Specialized Aethos FACT |
| Fork | Trek Emonda SLR | not listed |
| Shifter | Shimano Ultegra R8020 | 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 Pro 37 | Roval C38 |
| Tire | Bontrager R3 Hard-Case Lite | Specialized S-Works Turbo |
| Brake | Shimano Ultegra | SRAM Rival eTap AXS |
| Handlebar | Bontrager Aeolus RSL | not listed |
| Seatpost | Bontrager Seatmast Cap | Roval Alpinist |
| Saddle | Bontrager Aeolus Elite | Specialized Power Expert |
| Bottom bracket | not listed | SRAM DUB |
Know what is on every bike.
Add your bike to Quiver. Keep its parts, setup, and service history together, then share your build.
Explore the app
