Specialized · Aethos

Aethos 2 Expert - Shimano Ultegra Di2

2027

$6,499.99

Manufacturer price · US market. Not a local price.

Specialized Aethos 2 Expert - Shimano Ultegra Di2
Roval Alpinist Carbon HandlebarHandlebar
Body Geometry Power ExpertSaddle
Aethos 2 FACT 10r CarbonFrame
Aethos 2 FACT 10r CarbonFork
Shimano Ultegra BR-R8170 Hydraulic BrakeBrakes
Shimano Ultegra Di2 R8150 · 12 speedsDrivetrain
S-Works TurboTyres

Tap a number to see the part.

Roval Alpinist Carbon Handlebar

Handlebar

The handlebar and stem are where your hands steer the bike. Their width and length set how upright or stretched out you sit.

Body Geometry Power Expert

Saddle

The saddle and seatpost carry your weight. The height of the seatpost sets your pedalling position.

Aethos 2 FACT 10r Carbon

Frame

The frame is the bike's backbone: every other part is fixed to it. Its material and shape decide its weight and how it feels to ride.

Aethos 2 FACT 10r Carbon

Fork

The fork holds the front wheel. A suspension fork absorbs bumps at the front; its travel is how far it can compress.

Shimano Ultegra BR-R8170 Hydraulic Brake

Brakes

Brakes slow the bike. Disc brakes squeeze a rotor fixed to the wheel hub; rim brakes squeeze the wheel rim itself.

Shimano Ultegra Di2 R8150 · 12 speeds

Drivetrain

The drivetrain turns your pedalling into motion: the cranks, the chain, the cassette and the derailleur that changes gear.

S-Works Turbo

Tyres

Tyres are the bike's only contact with the ground. Their width and tread decide grip, comfort and rolling speed.

© Specialized Bicycle Components

Equipment

Partial coverageChecked: August 25, 2026Manufacturer page
Rear derailleur brand
Shimano
Source text
  • “Shimano Ultegra Di2 R8150, 12-speed” — Rear Derailleur
Front brake brand
Shimano
Source text
  • “Shimano Ultegra BR-R8170 Hydraulic Brake” — Front Brake
Front brake part number
BR-R8170
Source text
  • “Shimano Ultegra BR-R8170 Hydraulic Brake” — Front Brake
Rear brake brand
Shimano
Source text
  • “Shimano Ultegra BR-R8170 Hydraulic Brake” — Rear Brake
Rear brake part number
BR-R8170
Source text
  • “Shimano Ultegra BR-R8170 Hydraulic Brake” — Rear Brake
Front wheel brand
Roval
Source text
  • “Roval C38, 21mm internal width carbon rim” — Front Wheel
Rear wheel brand
Roval
Source text
  • “Roval C38, 21mm internal width carbon rim, tubeless ready” — Rear Wheel
Frame material
Carbon
Source text
  • “Aethos 2 FACT 10r Carbon, Rider First Engineered™, Threaded BB, Hidden Cable Routing, 12x142mm thru-axle, flat-mount disc” — Frame
Cassette speeds
12
Source text
  • “Shimano Ultegra, 12-speed, 11-30t” — Cassette
Cassette teeth
11/30
Source text
  • “Shimano Ultegra, 12-speed, 11-30t” — Cassette
Chainring teeth
52/36
Source text
  • “Shimano Ultegra R8100, 52/36t” — Crankset
Bike weight
7.27 kgSize: ⁨56⁩
Source text
  • “7.27 kg (16 lb, 0.4 oz)” — Weight
  • “56” — Weight Size

Components

Frame
Aethos 2 FACT 10r Carbon, Rider First Engineered™, Threaded BB, Hidden Cable Routing, 12x142mm thru-axle, flat-mount disc
Crank length49
165mm
Crank length52
165mm
Crank length54
170mm
Crank length56
170mm
Crank length58
172.5mm
Crank length61
172.5mm
Fork
Aethos 2 FACT 10r Carbon, 12x100mm thru-axle, flat-mount disc
Handlebar width49
380mm
Handlebar width52
400mm
Handlebar width54
400mm
Handlebar width56
420mm
Handlebar width58
420mm
Handlebar width61
440mm
Front brake
Shimano Ultegra BR-R8170 Hydraulic Brake
Stem length49
80mm
Stem length52
90mm
Stem length54
100mm
Stem length56
100mm
Stem length58
110mm
Stem length61
110mm
Rear brake
Shimano Ultegra BR-R8170 Hydraulic Brake
Saddle width49
155mm
Saddle width52
155mm
Saddle width54
143mm
Saddle width56
143mm
Saddle width58
143mm
Saddle width61
143mm
Shift levers
Shimano Ultegra Di2 R8170, hydraulic disc
Seatpost length49
300mm
Seatpost length52
300mm
Seatpost length54
360mm
Seatpost length56
360mm
Seatpost length58
360mm
Seatpost length61
360mm
Front derailleur
Shimano Ultegra Di2 R8150, braze-on
Rear derailleur
Shimano Ultegra Di2 R8150, 12-speed
Cassette
Shimano Ultegra, 12-speed, 11-30t
Chain
Shimano XT CN-M8100, 12-speed
Crankset
Shimano Ultegra R8100, 52/36t
Bottom bracket
Shimano Threaded BSA BB
Front wheel
Roval C38, 21mm internal width carbon rim
Front tyre
S-Works Turbo, 700x30
Rear tyre
S-Works Turbo, 700x30
Rear wheel
Roval C38, 21mm internal width carbon rim, tubeless ready
Inner tubes
700x28-38mm, 48mm Presta valve
Stem
Roval Alpinist, alloy, 4 bolt, -6 degrees
Handlebar
Roval Alpinist Carbon Handlebar, 125mm drop, 75mm reach
Bar tape
Supacaz Super Sticky Kush
Saddle
Body Geometry Power Expert, hollow Ti rails
Seatpost
Roval Alpinist Carbon Seatpost
Seatpost clamp
Specialized Alloy, 30mm
Product ID
294984
Weight
7.27 kg (16 lb, 0.4 oz)
Size used for weighing
56

Geometry

Frames drawn: Specialized Aethos 2 Expert - Shimano Ultegra Di2 · 49.
Specialized Aethos 2 Expert - Shimano Ultegra Di2 · 49
Measure495254565861
522 mm538 mm559 mm580 mm606 mm627 mm
373 mm377 mm384 mm391 mm398 mm404 mm
114 mm128 mm150 mm169 mm198 mm218 mm
71.4°72.1°72.5°73°73°73.5°
265.5 mm265.5 mm267 mm267 mm268.5 mm268.5 mm
76.5 mm76.5 mm75 mm75 mm73.5 mm73.5 mm
Trail62 mm58 mm55 mm55 mm55 mm52 mm
Fork Length (full)372 mm372 mm372 mm372 mm372 mm372 mm
50 mm50 mm50 mm47 mm47 mm47 mm
581 mm584 mm594 mm599 mm614 mm621 mm
410 mm410 mm410 mm410 mm410 mm410 mm
978 mm981 mm992 mm998 mm1,013 mm1,020 mm
508 mm526 mm544 mm557 mm572 mm584 mm
Standover719 mm737 mm759 mm779 mm805 mm834 mm
450 mm470 mm490 mm510 mm535 mm570 mm
75.5°74.5°74°74°74°74°

Similar bikes

Similar bicycles: same category and type, comparable US MSRP

How we choose
  • Same category and electric or non-electric type
  • US MSRP ratio no greater than 1.3
  • Other families, ordered by price and stack/reach proximity

Manufacturer suggested retail prices are for the US market in USD. They are not local retail prices.

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