2023 Specialized Aethos LTD vs 2022 Specialized Tarmac SL6
The Specialized Tarmac SL6 size closest to your 54 is the 54. Compare the 54 instead
What changes on the Specialized Tarmac SL6
Compared with the Specialized Aethos LTD in 54, the Specialized Tarmac SL6 in 56 places the top of the head tube 21 mm higher and 11 mm further forward, relative to the bottom bracket. Its wheelbase is 12 mm longer, which can contribute to stability at speed.
- Frame stack
- +21 mm
- Higher front end
- Frame reach
- +11 mm
- Longer frame reach
- Wheelbase
- +12 mm
- Longer: steadier at speed
- Head angle
- +0.5°
- Steeper: sharper steering
- Chainstays
- ±0 mm
- About the same
The two frames
Specialized Aethos LTD, 54Specialized Tarmac SL6, 56Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Aethos LTD 54 | Specialized Tarmac SL6 56 | Difference |
|---|---|---|---|
| Reach | 384mm | 395mm | +11 mm |
| Stack | 544mm | 565mm | +21 mm |
| Head tube angle | 73° | 73.5° | +0.5° |
| Seat tube angle | 74° | 73.5° | −0.5° |
| Chainstay length | 410mm | 410mm | ±0 mm |
| Wheelbase | 978mm | 990mm | +12 mm |
| BB drop | 72mm | 72mm | ±0 mm |
| BB height | 268mm | 268mm | ±0 mm |
| Standover | 748mm | 795mm | +47 mm |
| Seat tube length | 481mm | 519mm | +38 mm |
| Fork length | 369mm | 363mm | −6 mm |
| Head tube length | 137mm | 163mm | +26 mm |
Differences are the Specialized Tarmac SL6 minus the Specialized Aethos LTD. Full charts: 2023 Specialized Aethos LTD, 2022 Specialized Tarmac SL6.
Where each sits in its class
Specialized Aethos LTDSpecialized Tarmac SL6
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 LTDS-Works LTD | Specialized Tarmac SL6Tarmac SL6 - Shimano Tiagra |
|---|---|---|
| Frame | Specialized S-Works Aethos FACT | Specialized Tarmac SL6 |
| Shifter | Campagnolo Super Record | Shimano Tiagra |
| Derailleur | Campagnolo Super Record | Shimano Tiagra |
| Cassette | Campagnolo Super Record | not listed |
| Chain | Campagnolo Super Record | KMC X10 |
| Crankset | Campagnolo Super Record | Shimano Tiagra 4700 |
| Wheelset | Campagnolo Hyperon Ultra | Specialized Axis Sport |
| Tire | Specialized S-Works Turbo 2BR | Specialized Turbo Pro |
| Brake | Campagnolo Super Record | Shimano Tiagra BR-4770 |
| Seatpost | Roval Alpinist | not listed |
| Saddle | Specialized S-Works Power | Specialized Power Sport |
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