2022 Specialized Aethos Pro vs 2024 Specialized Tarmac SL8
The 49 is the Specialized Tarmac SL8 size closest to your 49 Specialized Aethos 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 Tarmac SL8
Compared with the Specialized Aethos Pro in 49, the Specialized Tarmac SL8 in 49 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 Aethos Pro, 49Specialized Tarmac SL8, 49Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Aethos Pro 49 | Specialized Tarmac SL8 49 | Difference |
|---|---|---|---|
| Reach | 375mm | 375 | ±0 mm |
| Stack | 514mm | 514 | ±0 mm |
| Head tube angle | 71.75° | 71.75 | ±0.0° |
| Seat tube angle | 75.5° | 75.5 | ±0.0° |
| Chainstay length | 410mm | 410 | ±0 mm |
| Wheelbase | 973mm | 973 | ±0 mm |
| BB drop | 74mm | 74 | ±0 mm |
| BB height | 266mm | 266 | ±0 mm |
| Standover | 705mm | 735 | +30 mm |
| Seat tube length | 431mm | 445 | +14 mm |
| Fork length | 369mm | 370 | +1 mm |
| Head tube length | 109mm | 109 | ±0 mm |
Differences are the Specialized Tarmac SL8 minus the Specialized Aethos Pro. Full charts: 2022 Specialized Aethos Pro, 2024 Specialized Tarmac SL8.
Where each sits in its class
Specialized Aethos ProSpecialized Tarmac SL8
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 ProPro | Specialized Tarmac SL8 |
|---|---|---|
| Frame | Specialized Aethos FACT | not listed |
| Shifter | SRAM Force eTap AXS | not listed |
| Derailleur | SRAM Force eTAP AXS | not listed |
| Cassette | SRAM Force | not listed |
| Chain | SRAM Force | not listed |
| Crankset | SRAM Force AXS Power Meter | not listed |
| Bottom bracket | SRAM DUB | not listed |
| Wheelset | Roval Alpinist CL | not listed |
| Tire | Specialized S-Works Turbo | not listed |
| Brake | SRAM Red AXS, SRAM Red E1 | not listed |
| Seatpost | Roval Alpinist | not listed |
| Saddle | Specialized Power | not listed |
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