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Specialized Aethos Expert

Specialized Aethos Expert
  • Color: Gloss Dune White/Metallic Obsidian
  • Color: Satin Metallic Deep Lake/Deep Lake
Size: Select size
Wheel Size: 700c
Please select options Unavailable


Aethos: Billions of calculations in the pursuit of one thing—the perfect ride. It’s more than just a motto, it’s a philosophy. The Aethos has been designed to straddle the line between a perfected ride quality, extreme light weight, and undeniable style, and this Expert model is no exception.

With wireless SRAM Rival eTap AXS electronic shifting and hydraulic disc brakes paired with bomb-proof Roval C38 Disc carbon wheels, you have the perfect steed to get you out on the road.

- The Aethos frame has been designed with the perfect combination of ultimate ride feel, lightweight, 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, further saving weight and improving ride characteristics. Everything in pursuit for the perfect ride.

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
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
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°
5'1"-5'4" 155-163 49
5'4"-5'7" 163-170 52
5'7"-5'9" 170-175 54


Fork FACT Carbon, 12x100mm thru-axle, flat-mount disc
Stem Specialized Pro SL, alloy, 4-bolt
Chain SRAM Rival 12-speed
Frame Aethos FACT 10R Carbon, Rider First Engineered™, Threaded BB, 12x142mm thru-axle, flat-mount disc
Tires F: S-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700x28mm, R: S-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700x28mm
Saddle Body Geometry Power Expert
Wheels F: Roval C38, 21mm internal width carbon rim, R: Roval C38, 21mm internal width carbon rim
Crankset SRAM Rival
Seatpost Roval Alpinist Carbon Seatpost
Shifters SRAM Rival eTap AXS
Chainrings 48/35T
Handlebars Specialized Expert Shallow Drop, alloy, 125mm drop x 75mm reach
Tape/Grips Supacaz Super Sticky Kush
Bottom Bracket SRAM DUB BSA 68
Rear Derailleur SRAM Rival eTap AXS, 12-speed
Front Derailleur SRAM Rival eTAP AXS, braze-on
Cassette/Freewheel SRAM Rival, 12-speed, 10-36t

* Subject to change without notice.

Part Numbers

Option UPC MPN Store SKU
Gloss Dune White/Metallic Obsidian / 49cm / 700c 888818865185 97223-3149
Gloss Dune White/Metallic Obsidian / 52cm / 700c 888818864560 97223-3152
Gloss Dune White/Metallic Obsidian / 54cm / 700c 888818864843 97223-3154
Gloss Dune White/Metallic Obsidian / 56cm / 700c 888818864539 97223-3156
Gloss Dune White/Metallic Obsidian / 58cm / 700c 888818864447 97223-3158 210000018060
Gloss Dune White/Metallic Obsidian / 61cm / 700c 888818865154 97223-3161
Satin Metallic Deep Lake/Deep Lake / 49cm / 700c 888818864829 97223-3049
Satin Metallic Deep Lake/Deep Lake / 52cm / 700c 888818864713 97223-3052
Satin Metallic Deep Lake/Deep Lake / 54cm / 700c 888818864799 97223-3054
Satin Metallic Deep Lake/Deep Lake / 56cm / 700c 888818864935 97223-3056
Satin Metallic Deep Lake/Deep Lake / 58cm / 700c 888818864850 97223-3058
Satin Metallic Deep Lake/Deep Lake / 61cm / 700c 888818865048 97223-3061