2026 Specialized Aethos 2 Expert - Shimano Ultegra Di2
Product details
| Management number | 236280020 | Release Date | 2026/07/09 | List Price | US$1,980.00 | Model Number | 236280020 | ||
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With a 705g frame, the Aethos 2 is the lightest bike in its class. But weight was never the point. Built by breaking racing's rules to deliver pure road riding bliss, it's engineered to disappear beneath you: responsive, supple, and sublime. Now with increased tire clearance, refined components, and data-based fit-enhancing geometry, it brings that transcendent ride feel to more riders than ever. Aethos 2 breaks the rules, for the love of the ride.
- 705g FACT 10r Carbon Frame: Lightest bike in its class, Rider First Engineered™.
- FACT 10r Carbon Fork: Full carbon, 12x100mm thru-axle, flat-mount disc.
- Shimano Ultegra Di2 R8150: 12-speed electronic shifting with semi-wireless cockpit.
- Roval C38 Carbon Wheels: Tubeless-ready, 38mm depth, 21mm internal width.
- Roval Alpinist Carbon Cockpit: 125mm drop, 75mm reach, Specialized Pro SL stem.
- 52/36t Crankset: Shimano Ultegra R8100, optimized for all-around performance.
- Body Geometry Power Expert Saddle: Ergonomic pressure relief, hollow chromoly rails.
- 28mm Tire Clearance: Increased clearance for modern road tires.
Complete build at 7.12kg (56cm). Six sizes: 49, 52, 54, 56, 58, 61.
| 49 | 52 | 54 | 56 | 58 | 61 | |
|---|---|---|---|---|---|---|
| Crank Length | 165 | 170 | 172.5 | 172.5 | 175 | 175 |
| Handlebar Width | 380 | 400 | 400 | 420 | 420 | 440 |
| Stem Length | 80 | 90 | 100 | 100 | 110 | 110 |
| Saddle Width | 155 | 155 | 143 | 143 | 143 | 143 |
| Seatpost Length | 300 | 300 | 360 | 360 | 360 | 360 |
| Stack | 522 | 538 | 559 | 580 | 606 | 627 |
| Reach | 373 | 377 | 384 | 391 | 398 | 404 |
| Head Tube Length | 114 | 128 | 150 | 169 | 198 | 218 |
| Head Tube Angle | 71.4° | 72.1° | 72.5° | 73° | 73° | 73.5° |
| BB Height | 265.5 | 265.5 | 267 | 267 | 268.5 | 268.5 |
| BB Drop | 76.5 | 76.5 | 75 | 75 | 73.5 | 73.5 |
| Trail | 62 | 58 | 55 | 55 | 55 | 52 |
| Fork Length, Full | 372 | 372 | 372 | 372 | 372 | 372 |
| Fork Rake/Offset | 50 | 50 | 50 | 47 | 47 | 47 |
| Front Center | 581 | 584 | 594 | 599 | 614 | 621 |
| Chainstay Length | 410 | 410 | 410 | 410 | 410 | 410 |
| Wheelbase | 978 | 981 | 992 | 998 | 1013 | 1020 |
| Top Tube Length, Horizontal | 508 | 526 | 544 | 557 | 572 | 584 |
| Bike Standover Height | 719 | 737 | 759 | 779 | 805 | 834 |
| Seat Tube Length | 450 | 470 | 490 | 510 | 535 | 570 |
| Seat Tube Angle | 75.5° | 74.5° | 74° | 74° | 74° | 74° |
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