2023 Specialized S-Works Aethos Dura-Ace Di2 Features
Don’t get us wrong, we’re all for racing. Grand Tour top steps, Classic’s Monuments—they’re in our DNA. But sometimes riding simply to ride, riding for the love of riding, is just what we need. And this is what the Aethos lives for. Sure, it’s given nothing up to performance, and happens to be the lightest frame out there, but with no compromise to style. Aethos: Billions of calculations in the pursuit of one thing—the perfect ride.
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 gives up nothing in the name of performance.
At a Glance
- 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.
Component Specifications
| Frame | S-Works Aethos FACT 12r Carbon, Rider First Engineered™, Threaded BB, Electronic cable routing only, 12x142mm thru-axle, flat-mount disc |
| Seat Binder | Specialized Alloy, 30.0mm, titanium bolt |
| Fork | S-Works FACT Carbon, 12x100mm thru-axle, flat-mount disc |
| Shift Levers | Shimano Dura-Ace R9270, hydraulic disc |
| Front Derailleur | Shimano Dura-Ace R9250, braze-on |
| Rear Derailleur | Shimano Dura-Ace R9250, 12-speed |
| Cassette | Shimano Dura-Ace, 12-speed, 11-30t |
| Chain | Shimano XTR M9100, 12-speed w/ quick link |
| Crankset | Shimano Dura-Ace R9200, HollowTech II, 12-speed with 4iiii Precision Pro dual-sided powermeter |
| Chain Rings | 52/36T |
| Bottom Bracket | Shimano Dura-Ace, BB-R9100 |
| Front Tire | S-works Turbo 2BR, 700x28mm |
| Rear Tire | S-works Turbo 2BR, 700x28mm |
| Inner Tubes | 700x20-28, 48mm Presta Valve |
| Front Brake | Shimano Dura-Ace 9200, Hydraulic Disc |
| Rear Brake | Shimano Dura-Ace 9200, Hydraulic Disc |
| Stem | S-Works SL, alloy, titanium bolts, 6-degree rise |
| Handlebars | S-Works Short & Shallow, 123mm Drop, 75mm Reach w/Di2 Hole |
| Saddle | Body Geometry S-Works Power, carbon fiber rails, carbon fiber base |
| Seatpost | Roval Alpinist Carbon Seatpost |
2023 Specialized S-Works Aethos Dura-Ace Di2
| Bike/Frame Size | 49 | 52 | 54 | 56 | 58 | 61 |
|---|---|---|---|---|---|---|
| Stack | 514 mm | 527 mm | 544 mm | 565 mm | 591 mm | 612 mm |
| Reach | 375 mm | 380 mm | 384 mm | 395 mm | 402 mm | 408 mm |
| Chainstay Length | 410 mm | 410 mm | 410 mm | 410 mm | 410 mm | 410 mm |
| Wheelbase | 973 mm | 975 mm | 978 mm | 991 mm | 1005 mm | 1012 mm |
| Top Tube Length, Horizontal | 508 mm | 531 mm | 540 mm | 562 mm | 577 mm | 595 mm |
| Bike Standover Height | 705 mm | 728 mm | 748 mm | 769 mm | 796 mm | 824 mm |
| Seat Tube Length | 431 mm | 462 mm | 481 mm | 504 mm | 532 mm | 567 mm |
| Seat Tube Angle | 75.5° | 74° | 74° | 73.5° | 73.5° | 73° |
| Head Tube Length | 109 mm | 120 mm | 137 mm | 157 mm | 184 mm | 204 mm |
| Head Tube Angle | 71.75° | 72.5° | 73° | 73.5° | 73.5° | 74° |
| BB Height | 266 mm | 266 mm | 268 mm | 268 mm | 268 mm | 268 mm |
| BB Drop | 74 mm | 74 mm | 72 mm | 72 mm | 72 mm | 72 mm |
| Trail | 63 mm | 58 mm | 58 mm | 55 mm | 55 mm | 52 mm |
| Fork Length, Full | 369 mm | 369 mm | 369 mm | 369 mm | 369 mm | 369 mm |
| Fork Rake/Offset | 47 mm | 47 mm | 44 mm | 44 mm | 44 mm | 44 mm |
| Front Center | 574 mm | 577 mm | 579 mm | 591 mm | 606 mm | 613 mm |
Size Guide: 2023 Specialized S-Works Aethos Dura-Ace Di2
