Specialized Aethos 2 Pro Shimano Ultegra Di2 (2026)
Regular price
$8,499.00
More stock coming soon
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That's $169.98 toward future purchases!
By Specialized
Pickup available at CyclErie Bikes & Service - Erie, CO
Usually ready in 2-4 days
Specialized Aethos 2 Pro Shimano Ultegra Di2 (2026)
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.
Highlights
- Use - Performance Road Riding
- Frameset - 705g FACT 10r Frame / FACT 10r Fork
- Fit - Performance Endurance
- Cockpit & Wheels - Roval Alpinist II and CL II wheels
- Drivetrain - Shimano Ultegra Di2
- Weight - 6.73kg (56cm)
Technical Specifications
Frameset
- Frame: Aethos 2 FACT 10r Carbon, Rider First Engineered™, Threaded BB, Hidden Cable Routing, 12x142mm thru-axle, flat-mount disc
Suspension
- Fork: Aethos 2 FACT 10r Carbon, 12x100mm thru-axle, flat-mount disc
Brakes
- Front Brake: Shimano Ultegra BR-R8170, hydraulic disc
- Rear Brake: Shimano Ultegra BR-R8170, hydraulic disc
Drivetrain
- Bottom Bracket: Shimano Threaded BSA BB
- Rear Derailleur: Shimano Ultegra Di2 RD-R8150, 12-speed
- Front Derailleur: Shimano Ultegra Di2 FD-R8150, braze-on
- Shift Levers: Shimano Ultegra Di2 R8170, hydraulic disc
- Crankset: Shimano Ultegra R8100 with 4iiii Precision 3+ single-sided Power Meter, 52/36t
- Cassette: Shimano Ultegra, 12-speed, 11-30t
- Chain: Shimano XT CN-M8100, 12-speed
Wheels & Tires
- Inner Tubes: 700x25-35, 50mm Presta Valve, TPU
- Front Tire: S-Works Turbo TLR Race Tire, 700x28c
- Rear Tire: S-Works Turbo TLR Race Tire, 700x28c
- Front Wheel: Roval Alpinist CL II, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, DT for Roval 350 hub, DT Swiss Aerolite spokes, Tubeless Ready
- Rear Wheel: Roval Alpinist CL II, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, DT for Roval 350 hub, DT Swiss Aerolite spokes, Tubeless Ready
Cockpit
- Handlebars: Roval Alpinist Cockpit II, Integrated Bar/Stem
- Saddle: Power Pro Mirror, hollow Ti rails
- SeatPost: Roval Alpinist Carbon Seatpost
- Seat Binder: Specialized Alloy, 30mm
- Tape: Supacaz Super Sticky Kush
Geometry (mm)
| 49 | 52 | 54 | 56 | 58 | 61 | |
|---|---|---|---|---|---|---|
| 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 |
Weight: 6.73kg (56cm) (approx. 14.8 lbs), manufacturer spec
Specialized Aethos 2 Pro Shimano Ultegra Di2 (2026)
We had an outstanding experience at Cyclerie! We purchased two Aventon e-bikes, and the entire process was exceptional from start to finish. The staff took the time to help us choose the perfect bikes for our needs, recommended all the right accessories, and even installed our bike rack on the car before we left.
I had a terrific experience at Cyclerie! I love the bike I bought and working with Skip was great. He told me about customizing features that are available on the bike if you use the Aventon app.
I enjoyed my buying experience at Cyclerie. Ideal location, easy to get to, easy access to trails to test ride. … Salesperson was helpful, knowledgeable and easy to work with. No pressure to buy.
