Aethos 2
Break the Rules
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,...
Aethos 2 Expert - Shimano Ultegra Di2
Aethos 2
Break the Rules
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.

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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
COCKPIT
Handlebars
Roval Alpinist Carbon Handlebar, 125mm drop, 75mm reach
Stem
Specialized Pro SL, alloy, 4-bolt
Tape
Supacaz Super Sticky Kush
Saddle
Body Geometry Power Expert
SeatPost
Roval Alpinist Carbon Seatpost
Seat Binder
Specialized Alloy, 30mm
BRAKES
Front Brake
Shimano Ultegra BR-R8170 Hydraulic Brake
Rear Brake
Shimano Ultegra BR-R8170 Hydraulic Brake
DRIVETRAIN
Shift Levers
Shimano Ultegra Di2 R8170, hydraulic disc
Front Derailleur
Shimano Ultegra Di2 R8150, braze-on
Rear Derailleur
Shimano Ultegra Di2 R8150, 12-speed
Cassette
Shimano Ultegra, 12-speed, 11-30t
Crankset
Shimano Ultegra R8100, 52/36t
Chainrings
#N/ABottom Bracket
Shimano Threaded BSA BB
Chain
Shimano XT M8100, 12-speed w/ quick link
WHEELS & TIRES
Front Wheel
Roval C38, 21mm internal width carbon rim
Rear Wheel
Roval C38, 21mm internal width carbon rim
Front Tire
S-Works Turbo, 700x28
Rear Tire
S-Works Turbo, 700x28
Inner Tubes
700x20-28, 48mm Presta Valve
* 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 | 380mm | 400mm | 400mm | 420mm | 420mm |
| Stem Length | 80mm | 90mm | 100mm | 100mm | 110mm | 110mm |
| Saddle Width | 155mm | 155mm | 143mm | 143mm | 143mm | 143mm |
| Seatpost Length | 300mm | 300mm | 360mm | 360mm | 360mm | 360mm |
| Stack | 522mm | 538mm | 559mm | 580mm | 606mm | 627mm |
| Reach | 373mm | 377mm | 384mm | 391mm | 398mm | 404mm |
| Head Tube Length | 114mm | 128mm | 150mm | 169mm | 198mm | 218mm |
| Head Tube Angle | 71.4° | 72.1° | 72.5° | 73° | 73° | 73.5° |
| BB Height | 265.5mm | 265.5mm | 267mm | 267mm | 268.5mm | 268.5mm |
| BB Drop | 76.5mm | 76.5mm | 75mm | 75mm | 73.5mm | 73.5mm |
| Trail | 62mm | 58mm | 55mm | 55mm | 55mm | 52mm |
| Fork Length, Full | 372mm | 372mm | 372mm | 372mm | 372mm | 372mm |
| Fork Rake/Offset | 50mm | 50mm | 50mm | 47mm | 47mm | 47mm |
| Front Center | 581mm | 584mm | 594mm | 599mm | 614mm | 621mm |
| Chainstay Length | 410mm | 410mm | 410mm | 410mm | 410mm | 410mm |
| Wheelbase | 978mm | 981mm | 992mm | 998mm | 1013mm | 1020mm |
| Top Tube Length, Horizontal | 508mm | 526mm | 544mm | 557mm | 572mm | 584mm |
| Bike Standover Height | 719mm | 737mm | 759mm | 779mm | 805mm | 834mm |
| Seat Tube Length | 450mm | 470mm | 490mm | 510mm | 535mm | 570mm |
| Seat Tube Angle | 75.5° | 74.5° | 74° | 74° | 74° | 74° |
SIZE CHART


Aethos 2 Expert - Shimano Ultegra Di2