2022 Specialized Aethos Pro 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 Pro in 54, the Specialized Tarmac SL8 in 61 places the top of the head tube 68 mm higher and 24 mm further forward, relative to the bottom bracket. Its wheelbase is 35 mm longer, which can contribute to stability at speed.
- Frame stack
- +68 mm
- Higher front end
- Frame reach
- +24 mm
- Longer frame reach
- Wheelbase
- +35 mm
- Longer: steadier at speed
- Head angle
- +1.0°
- Steeper: sharper steering
- Chainstays
- ±0 mm
- About the same
The two frames
Specialized Aethos Pro, 54Specialized Tarmac SL8, 61Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Aethos Pro 54 | Specialized Tarmac SL8 61 | Difference |
|---|---|---|---|
| Reach | 384mm | 408 | +24 mm |
| Stack | 544mm | 612 | +68 mm |
| Head tube angle | 73° | 74 | +1.0° |
| Seat tube angle | 74° | 73 | −1.0° |
| Chainstay length | 410mm | 410 | ±0 mm |
| Wheelbase | 978mm | 1013 | +35 mm |
| BB drop | 72mm | 72 | ±0 mm |
| BB height | 268mm | 268 | ±0 mm |
| Standover | 748mm | 834 | +86 mm |
| Seat tube length | 481mm | 545 | +64 mm |
| Fork length | 369mm | 370 | +1 mm |
| Head tube length | 137mm | 204 | +67 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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