2022 Specialized Aethos Comp vs 2024 Specialized Tarmac SL8
The 58 is the Specialized Tarmac SL8 size closest to your 58 Specialized Aethos Comp. 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 Comp in 58, the Specialized Tarmac SL8 in 58 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
- +1 mm
- About the same
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- ±0 mm
- About the same
The two frames
Specialized Aethos Comp, 58Specialized Tarmac SL8, 58Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Aethos Comp 58 | Specialized Tarmac SL8 58 | Difference |
|---|---|---|---|
| Reach | 402mm | 402 | ±0 mm |
| Stack | 591mm | 591 | ±0 mm |
| Head tube angle | 73.5° | 73.5 | ±0.0° |
| Seat tube angle | 73.5° | 73.5 | ±0.0° |
| Chainstay length | 410mm | 410 | ±0 mm |
| Wheelbase | 1005mm | 1006 | +1 mm |
| BB drop | 72mm | 72 | ±0 mm |
| BB height | 268mm | 268 | ±0 mm |
| Standover | 796mm | 808 | +12 mm |
| Seat tube length | 532mm | 515 | −17 mm |
| Fork length | 369mm | 370 | +1 mm |
| Head tube length | 184mm | 184 | ±0 mm |
Differences are the Specialized Tarmac SL8 minus the Specialized Aethos Comp. Full charts: 2022 Specialized Aethos Comp, 2024 Specialized Tarmac SL8.
Where each sits in its class
Specialized Aethos CompSpecialized 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 CompComp | Specialized Tarmac SL8 |
|---|---|---|
| Frame | Specialized Aethos FACT | not listed |
| Derailleur | SRAM RD RIVAL ETAP AXS D1 MAX | not listed |
| Cassette | SRAM Rival XG-1250 D1 | not listed |
| Chain | SRAM RIVAL D1 | not listed |
| Crankset | SRAM FC RIVAL D1 DUB XXX 4835 | not listed |
| Bottom bracket | SRAM DUB | not listed |
| Wheelset | Specialized WH-DT R470 | not listed |
| Tire | Specialized Turbo Pro | not listed |
| Brake | Specialized override | not listed |
| Seatpost | Roval Alpinist | not listed |
| Saddle | Specialized Power Sport | not listed |
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