2022 Specialized Aethos Comp vs 2024 Specialized Tarmac SL8
The Specialized Tarmac SL8 size closest to your 54 is the 54. Compare the 54 instead
What changes on the Specialized Tarmac SL8
Compared with the Specialized Aethos Comp in 54, the Specialized Tarmac SL8 in 49 places the top of the head tube 30 mm lower and 9 mm further back, relative to the bottom bracket. Its wheelbase is 5 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −30 mm
- Lower front end
- Frame reach
- −9 mm
- Shorter frame reach
- Wheelbase
- −5 mm
- Shorter: quicker to change direction
- Head angle
- −1.3°
- Slacker: calmer steering
- Chainstays
- ±0 mm
- About the same
The two frames
Specialized Aethos Comp, 54Specialized Tarmac SL8, 49Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Aethos Comp 54 | Specialized Tarmac SL8 49 | Difference |
|---|---|---|---|
| Reach | 384mm | 375 | −9 mm |
| Stack | 544mm | 514 | −30 mm |
| Head tube angle | 73° | 71.75 | −1.3° |
| Seat tube angle | 74° | 75.5 | +1.5° |
| Chainstay length | 410mm | 410 | ±0 mm |
| Wheelbase | 978mm | 973 | −5 mm |
| BB drop | 72mm | 74 | +2 mm |
| BB height | 268mm | 266 | −2 mm |
| Standover | 748mm | 735 | −13 mm |
| Seat tube length | 481mm | 445 | −36 mm |
| Fork length | 369mm | 370 | +1 mm |
| Head tube length | 137mm | 109 | −28 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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