Aethos S-Works Dura Ace Di2
Specialized
97221-01
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For once, we’re not in it to win. With Aethos, we stopped worrying about winning, or the way things are supposed to be done, and instead chased the greatest expression of ride quality ever made. Well, we did it, and in staying true to keeping that promise, we broke every design, ride, and race rule along the way. And we’re not sorry. Aethos: Break the Rules.
Top off the world’s lightest frame with Shimano’s legendary Dura-Ace Di2 groupset and Roval’s featherweight Alpinist wheels and you’re left with a perfectly balanced, top-tier ride that delivers everything in the name of performance.
- The Aethos frame has been designed with the perfect combination of ultimate ride feel, light weight, and style—from accelerating up steep pitches and descending technical descents, to all-day saddle comfort on even the longest coffee rides, the Aethos hits the mark. But how, you ask? By reinventing the traditional road shape found on bikes of the past, we’ve subtly altered these shapes to deliver massive gains in stiffness and balance, all without affecting weight or durability. Pair that with an entirely-new layup and process that we’ve perfected over multiple decades and you have the lightest frame out there (585 grams, S-Works, size 56cm). The Aethos is more than just a new bike, it’s the first of a new breed.
- A featherweight frame is useless without confidence-inspiring ride characteristics, which is why we’ve developed the Aethos to have the perfect balance of front and rear stiffness combined with exceptional ride quality. By studying the flexing and breathing of carbon fiber, we were able to discover groundbreaking findings about how forces flow through frames. Just a few pedal strokes and you’ll realize this sublime ride sets a new standard.
- Every detail, from the derailleur hangers to the fork expander plug have been designed with style, weight, and durability in mind. We’ve also spec’d it with Roval’s all-new Alpinist carbon seatpost and wheels, further saving weight and improving ride characteristics. Everything in pursuit for the perfect ride.
FRAME
S-Works Aethos FACT 12r Carbon, Rider First Engineered™, Threaded BB, Electronic cable routing only, 12x142mm thru-axle, flat-mount disc
FORK
S-Works FACT Carbon, 12x100mm thru-axle, flat-mount disc
HANDLEBARS
S-Works Short & Shallow
STEM
S-Works SL, alloy, titanium bolts, 6-degree rise
TAPE
Supacaz Super Sticky Kush
SADDLE
Body Geometry S-Works Power, Carbon Fiber Rails, Carbon Fiber Base
SEATPOST
Roval Alpinist Carbon Seatpost
FRONT BRAKE
Shimano Dura-Ace R9170, hydraulic disc
SEAT BINDER
Specialized Alloy, 30.0mm, titanium bolt
REAR BRAKE
Shimano Dura-Ace R9170, hydraulic disc
SHIFT LEVERS
Shimano Dura-Ace Di2 Disc R9170
FRONT DERAILLEUR
Shimano Dura-Ace Di2 R9150, braze-on
REAR DERAILLEUR
Shimano Dura-Ace Di2 R9150, 11-speed
CHAIN
Shimano Dura-Ace, 11-speed
CASSETTE
Shimano Dura-Ace R9100, 11-speed, 11-30t
CRANKSET
Shimano Dura-Ace R9100, HollowTech 2, 11-speed, Dual-sided Powermeter, 52/36T
BOTTOM BRACKET
Shimano Dura-Ace, BB-R9100
FRONT WHEEL
Roval Alpinist CLX, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, Roval AFD hub, 21h, DT Swiss Aerolite spokes
REAR WHEEL
Roval Alpinist CLX, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, Roval AFD hub, 24h, DT Swiss Aerolite spokes
FRONT TIRE
Turbo Cotton, 320 TPI, 700x26mm
REAR TIRE
Turbo Cotton, 320 TPI, 700x26mm
INNER TUBES
Turbo Ultralight, 48mm Presta valve
| Size | 49 | 52 | 54 | 56 | 58 | 61 |
|---|---|---|---|---|---|---|
| BB Drop | 74 | 74 | 72 | 72 | 72 | 72 |
| BB Height | 266 | 266 | 268 | 268 | 268 | 268 |
| Bike Standover Height | 705 | 728 | 748 | 769 | 796 | 824 |
| Chainstay Length | 410 | 410 | 410 | 410 | 410 | 410 |
| Fork Length, Full | 369 | 369 | 369 | 369 | 369 | 369 |
| Fork Rake/Offset | 47 | 47 | 44 | 44 | 44 | 44 |
| Front Center | 574 | 577 | 579 | 591 | 606 | 613 |
| Head Tube Angle | 71.75 | 72.5 | 73 | 73.5 | 73.5 | 74 |
| Head Tube Length | 109 | 120 | 137 | 157 | 184 | 204 |
| Reach | 375 | 380 | 384 | 395 | 402 | 408 |
| Seat Tube Angle | 75.5 | 74 | 74 | 73.5 | 73.5 | 73 |
| Seat Tube Length | 431 | 462 | 481 | 504 | 532 | 567 |
| Stack | 514 | 527 | 544 | 565 | 591 | 612 |
| Top Tube Length, Horizontal | 508 | 531 | 540 | 562 | 577 | 595 |
| Trail | 63 | 58 | 58 | 55 | 55 | 52 |
| Wheelbase | 973 | 975 | 978 | 991 | 1005 | 1012 |
Data sheet :
| Year | Summer 2021 |
| Frame | carbon |
| Wheel size | 700x26mm |
| Motor | Non-electric |
| Suspension type | Rigid |
| Bike cassette | 11 |
| Bike Weight | 12KG - 15KG |
| Brake type | Hydraulic disc |
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