Aethos 2 2025
Source: https://www.specialized.com/us/en/s-works-aethos-2-shimano-dura-ace-di2/p/4221562
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Source: https://www.specialized.com/us/en/s-works-aethos-2-shimano-dura-ace-di2/p/4221562
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| Measurement | 49 | 52 | 54 | 56 | 58 | 61 |
|---|---|---|---|---|---|---|
| Frame geometry | ||||||
| Stack | 522 mm | 538 mm | 559 mm | 580 mm | 606 mm | 627 mm |
| Reach | 373 mm | 377 mm | 384 mm | 391 mm | 398 mm | 404 mm |
| Stack / Reach | 1.40 | 1.43 | 1.46 | 1.48 | 1.52 | 1.55 |
| Head tube angle | 71.4° | 72.1° | 72.5° | 73° | 73° | 73.5° |
| Seat tube angle (effective) | 75.5° | 74.5° | 74° | 74° | 74° | 74° |
| Seat tube angle (actual) | — | — | — | — | — | — |
| Top tube (effective) | 508 mm | 526 mm | 544 mm | 557 mm | 572 mm | 584 mm |
| Head tube length | 114 mm | 128 mm | 150 mm | 169 mm | 198 mm | 218 mm |
| Seat tube length | 450 mm | 470 mm | 490 mm | 510 mm | 535 mm | 570 mm |
| Bottom bracket drop | 76.5 mm | 76.5 mm | 75 mm | 75 mm | 73.5 mm | 73.5 mm |
| Bottom bracket height | 265.5 mm | 265.5 mm | 267 mm | 267 mm | 268.5 mm | 268.5 mm |
| Chainstay | 410 mm | 410 mm | 410 mm | 410 mm | 410 mm | 410 mm |
| Front center | 581 mm | 584 mm | 594 mm | 599 mm | 614 mm | 621 mm |
| Wheelbase | 978 mm | 981 mm | 992 mm | 998 mm | 1013 mm | 1020 mm |
| Fork rake (offset) | 50 mm | 50 mm | 50 mm | 47 mm | 47 mm | 47 mm |
| Fork axle to crown | 372 mm | 372 mm | 372 mm | 372 mm | 372 mm | 372 mm |
| Trail | 62 mm | 58 mm | 55 mm | 55 mm | 55 mm | 52 mm |
| Standover | 719 mm | 737 mm | 759 mm | 779 mm | 805 mm | 834 mm |
| Pad / effective stack | — | — | — | — | — | — |
| Pad / effective reach | — | — | — | — | — | — |
| Cockpit | ||||||
| Grip reach | 513.3 mm | 527.8 mm | 545.0 mm | 552.5 mm | 569.3 mm | 575.8 mm |
| Grip stack | 577.4 mm | 594.6 mm | 617.1 mm | 637.3 mm | 665.2 mm | 685.4 mm |
| Stem length | 80 mm | 90 mm | 100 mm | 100 mm | 110 mm | 110 mm |
| Spacer height | — | — | — | — | — | — |
| Bar reach | 75 mm | 75 mm | 75 mm | 75 mm | 75 mm | 75 mm |
| Bar drop | 123 mm | 123 mm | 123 mm | 123 mm | 123 mm | 123 mm |
| Bar flare | — | — | — | — | — | — |
| Handlebar width | 380 mm | 380 mm | 400 mm | 400 mm | 420 mm | 420 mm |
| Components (informational) | ||||||
| Crank length | 165 mm | 170 mm | 172.5 mm | 172.5 mm | 175 mm | 175 mm |
| Saddle width | 155 mm | 155 mm | 143 mm | 143 mm | 143 mm | 143 mm |
| Seatpost length | 300 mm | 300 mm | 360 mm | 360 mm | 360 mm | 360 mm |
| Tire clearance | — | — | — | — | — | — |
| Front travel | — | — | — | — | — | — |
| Rear travel | — | — | — | — | — | — |