At just 595 grams, the S-Works Aethos 2 is the lightest production road frame in the world. But that was never the point. Built by breaking the rules of racing to deliver pure road riding bliss, Aethos 2 is engineered to disappear beneath you. Impossibly responsive, supple, and sublime. Now...
S-Works Aethos 2 - Shimano Dura-Ace Di2
At just 595 grams, the S-Works Aethos 2 is the lightest production road frame in the world. But that was never the point. Built by breaking the rules of racing to deliver pure road riding bliss, Aethos 2 is engineered to disappear beneath you. Impossibly 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
S-Works Aethos 2 FACT 12r Carbon, Rider First Engineered™, Ceramic Speed SLT Headset Bearings, Threaded BB, Hidden Cable Routing, 12x142mm thru-axle, flat-mount disc
SUSPENSION
Fork
S-Works Aethos 2 FACT 12r Carbon, 12x100mm thru-axle, flat-mount disc
COCKPIT
Handlebars
Roval Alpinist Cockpit II, Integrated Bar/Stem
Stem
#N/ATape
Supacaz Super Sticky Kush
Saddle
S-Works Power with Mirror
SeatPost
Roval Alpinist Carbon Seatpost, light weight clamp
Seat Binder
Specialized Alloy, 30.0mm, titanium bolt
BRAKES
Front Brake
Shimano Dura-Ace BR-R9270 hydraulic brake
Rear Brake
Shimano Dura-Ace BR-R9270 hydraulic brake
DRIVETRAIN
Shift Levers
Shimano Dura-Ace Di2 R9270, hydraulic disc
Front Derailleur
Shimano Dura-Ace Di2 R9250, braze-on
Rear Derailleur
Shimano Dura-Ace Di2 R9250, 12-speed
Cassette
Shimano Dura-Ace, 12-speed, 11-30t
Crankset
Shimano Dura-Ace R9200, HollowTech II, 12-speed with 4iiii Precision Pro dual-sided powermeter, 52/36t
Chainrings
#N/ABottom Bracket
Shimano Dura-Ace, BB-R9100
Chain
Shimano XTR M9100, 12-speed w/ quick link
WHEELS & TIRES
Front Wheel
Roval Alpinist CLX III, Tubeless, 33mm depth, 26.5 width, and 21mm internal width carbon rim, Roval LF21-F 21H hub with Sinc Ceramic Bearings, Roval by ARRIS Composite Aero Spoke with Ti end fittings
Rear Wheel
Roval Alpinist CLX III, Tubeless, 33mm depth, 26.5 width, and 21mm internal width carbon rim, Roval LF19-R 24H hub with Sinc Ceramic Bearings, Roval by ARRIS Composite Aero Spoke with Ti end fittings
Front Tire
S-Works Turbo TLR Race Tire, 700x28c
Rear Tire
S-Works Turbo TLR Race Tire, 700x28c
Inner Tubes
700x25-35, 50mm Presta Valve, TPU
* 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


S-Works Aethos 2 - Shimano Dura-Ace Di2