2020 Specialized Tarmac Pro Disc vs 2022 Specialized Aethos Expert
The 52 is the Specialized Aethos Expert size closest to your 52 Specialized Tarmac Pro Disc. 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 Specialized Tarmac Pro Disc in 52, the Specialized Aethos Expert in 52 places the top of the head tube at about the same height and about as far forward, relative to the bottom bracket.
- Frame stack
- ±0 mm
- About the same height
- Frame reach
- ±0 mm
- About the same reach
- Wheelbase
- ±0 mm
- About the same
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- ±0 mm
- About the same
The two frames
Specialized Tarmac Pro Disc, 52Specialized Aethos Expert, 52Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Tarmac Pro Disc 52 | Specialized Aethos Expert 52 | Difference |
|---|---|---|---|
| Reach | 380mm | 380mm | ±0 mm |
| Stack | 527mm | 527mm | ±0 mm |
| Head tube angle | 72.5° | 72.5° | ±0.0° |
| Seat tube angle | 74° | 74° | ±0.0° |
| Chainstay length | 410mm | 410mm | ±0 mm |
| Wheelbase | 975mm | 975mm | ±0 mm |
| BB drop | 74mm | 74mm | ±0 mm |
| BB height | 266mm | 266mm | ±0 mm |
| Standover | 755mm | 728mm | −27 mm |
| Seat tube length | 462mm | 462mm | ±0 mm |
| Fork length | 363mm | 369mm | +6 mm |
| Head tube length | 126mm | 120mm | −6 mm |
Differences are the Specialized Aethos Expert minus the Specialized Tarmac Pro Disc. Full charts: 2020 Specialized Tarmac Pro Disc, 2022 Specialized Aethos Expert.
Where each sits in its class
Specialized Tarmac Pro DiscSpecialized 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 | Specialized Tarmac Pro DiscPro Disc | Specialized Aethos ExpertExpert |
|---|---|---|
| Frame | Specialized Tarmac SL6 | Specialized Aethos FACT |
| Derailleur | SRAM Force eTAP AXS | Specialized Di2 Shimano Ultegra R8150 |
| Cassette | SRAM XG-1270 | Shimano Ultegra |
| Chain | SRAM Force | Shimano XT M8100 |
| Crankset | SRAM Force AXS | Shimano Ultegra R8100 |
| Bottom bracket | SRAM DUB | not listed |
| Wheelset | Roval CL 50 | Roval C38 |
| Tire | Specialized S-Works Turbo | Specialized S-Works Turbo |
| Brake | SRAM Force eTAP | Shimano Ultegra R8170 |
| Saddle | Specialized Power | Specialized Power Expert |
| Shifter | not listed | Specialized Di2 Shimano Ultegra R8170 |
| Seatpost | not listed | Roval Alpinist |
Know what is on every bike.
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