The Aethos line promises three things—exceptional light weight, perfectly-balanced ride characteristics, and undeniable style—and this Aethos pro is no exception. Aethos: Billions of calculations in the pursuit of one thing—the perfect ride.
Spec’d with Shimano’s Ultegra Di2 that delivers clean, crisp shifts and Roval’s Alpinist wheels mated to DT Swiss 350 hubs and your left with a no-fuss build that delivers, mile after mile.
- 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
Technical Specifications
Frameset
Frame
Aethos FACT 10R Carbon, Rider First Engineered™, Threaded BB, 12x142mm thru-axle, flat-mount disc
Suspension
Fork
FACT Carbon, 12x100mm thru-axle, flat-mount disc
Cockpit
Handlebars
S-Works Short & Shallow, 125mm Drop, 75mm Reach w/Di2 Hole
Stem
Specialized Pro SL, alloy, 4-bolt
Tape
Supacaz Super Sticky Kush
Saddle
Body Geometry Power Pro, hollow titanium rails
SeatPost
Roval Alpinist Carbon Seatpost
Seat Binder
Specialized Alloy, 30mm
Brakes
Front Brake
Shimano Ultegra R8170, hydraulic disc
Rear Brake
Shimano Ultegra R8170, hydraulic disc
Drivetrain
Shift Levers
Shimano Ultegra R8170, hydraulic disc
Front Derailleur
Shimano Ultegra R8150, braze-on
Rear Derailleur
Shimano Ultegra R8150, 12-speed
Cassette
Shimano Ultegra, 12-speed, 11-30t
Crankset
Shimano Ultegra R81000 with 4iiiis Power Meter
Chainrings
52/36T
Bottom Bracket
Shimano Threaded BSA BB
Chain
Shimano M8100, 12-speed w/ quick link
Wheels & Tires
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
Front Tire
S-works Turbo 2BR, 700x28mm
Rear Tire
S-works Turbo 2BR, 700x28mm
Inner Tubes
700×20-28, 48mm Presta Valve
Weight
Weight
6.93kg (15 lb, 4.4 oz)
Weight Size
56
*Weights based on production painted frames as pictured. Actual weights will vary based on colorway, frame size, and component variation. Specifications are subject to change without notice.
Geometry
| 49 | 52 | 54 | 56 | 58 | 61 | |
|---|---|---|---|---|---|---|
| Crank Length | 165mm | 170mm | 172.5mm | 172.5mm | 175mm | 175mm |
| Handlebar Width | 380mm | 400mm | 420mm | 420mm | 440mm | 440mm |
| Stem Length | 80mm | 90mm | 100mm | 100mm | 110mm | 110mm |
| Saddle Width | 155mm | 155mm | 143mm | 143mm | 143mm | 143mm |
| Seatpost Length | 300mm | 300mm | 360mm | 360mm | 360mm | 360mm |
| Wheelbase | 973mm | 975mm | 978mm | 991mm | 1005mm | 1012mm |
| Top Tube Length, Horizontal | 508mm | 531mm | 540mm | 562mm | 577mm | 595mm |
| Bike Standover Height | 705mm | 728mm | 748mm | 769mm | 796mm | 824mm |
| Seat Tube Length | 431mm | 462mm | 481mm | 504mm | 532mm | 567mm |
| Seat Tube Angle | 75.5° | 74° | 74° | 73.5° | 73.5° | 73° |
| Stack | 514mm | 527mm | 544mm | 565mm | 591mm | 612mm |
| Reach | 375mm | 380mm | 384mm | 395mm | 402mm | 408mm |
| Head Tube Length | 109mm | 120mm | 137mm | 157mm | 184mm | 204mm |
| Head Tube Angle | 71.75° | 72.5° | 73° | 73.5° | 73.5° | 74° |
| BB Height | 266mm | 266mm | 268mm | 268mm | 268mm | 268mm |
| BB Drop | 74mm | 74mm | 72mm | 72mm | 72mm | 72mm |
| Trail | 63mm | 58mm | 58mm | 55mm | 55mm | 52mm |
| Fork Length, Full | 369mm | 369mm | 369mm | 369mm | 369mm | 369mm |
| Fork Rake/Offset | 47mm | 47mm | 44mm | 44mm | 44mm | 44mm |
| Front Center | 574mm | 577mm | 579mm | 591mm | 606mm | 613mm |
| Chainstay Length | 410mm | 410mm | 410mm | 410mm | 410mm | 410mm |
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