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Specialized Aethos 2 Expert Shimano Ultegra Di2 road bike featuring a 705g FACT 10r carbon frame, Roval C38 carbon wheels, and Ultegra Di2 electronic shifting. A lightweight performance road bike built for climbing, endurance rides, and fast road cycling.
Specialized Aethos 2 Expert Shimano Ultegra Di2 road bike featuring a 705g FACT 10r carbon frame, Roval C38 carbon wheels, and Ultegra Di2 electronic shifting. A lightweight performance road bike built for climbing, endurance rides, and fast road cycling.
Specialized

2026 Specialized Aethos 2 Expert Shimano Ultegra Di2 Road Bike - Dolomite

£5,499.00
Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined

2026 Specialized Aethos 2 Expert Shimano Ultegra Di2 Road Bike - Dolomite

Season:2026

Brand:Specialized

Code:42215655446311

The Specialized Aethos 2 Expert Shimano Ultegra Di2 Road Bike delivers the perfect combination of ultra-lightweight design, precision electronic shifting, and exceptional ride quality for performance-focused road cyclists. Built around a 705g FACT 10r carbon frame and fork, the Aethos 2 Expert is engineered to offer responsive handling, efficient power transfer, and outstanding comfort, making it ideal for climbing, endurance rides, and fast club runs.

  • Ultra-light 705g FACT 10r carbon frame and fork
  • Shimano Ultegra Di2 electronic drivetrain for precise, reliable shifting
  • Roval C38 carbon wheels for speed, efficiency, and climbing performance
  • Roval Alpinist handlebar and Pro SL stem for responsive handling
  • Performance endurance geometry with increased tyre clearance

Designed for riders who value the pure experience of road cycling, this Aethos model features Shimano Ultegra Di2 electronic shifting, providing fast, smooth, and accurate gear changes in all riding conditions. The bike is equipped with Roval C38 carbon wheels, delivering an ideal balance of lightweight climbing performance and aerodynamic efficiency, while the Roval Alpinist handlebar and Pro SL stem ensure confident handling and responsive steering.

Specialized’s advanced FACT carbon construction and refined endurance geometry help the Aethos 2 disappear beneath you on the road, offering exceptional balance between stiffness, compliance, and durability. Increased tyre clearance improves versatility and comfort on longer rides, making the bike well suited for sportives, Gran Fondos, and everyday road training.

The Aethos 2 Expert is perfect for riders who want the lightweight feel of a climbing bike, the comfort of an endurance bike, and the precision of Shimano Ultegra Di2 electronic shifting. Whether you’re tackling long alpine climbs, fast group rides, or all-day endurance challenges, the Aethos 2 delivers unmatched performance, comfort, and style.

Experience the future of road cycling with the Specialized Aethos 2 Expert Shimano Ultegra Di2, a bike that redefines lightweight performance and ride quality for passionate road riders.

Technical Information
  • Frame
    Aethos 2 FACT 10r Carbon, Rider First Engineered™, Threaded BB, Hidden Cable Routing, 12x142mm thru-axle, flat-mount disc
  • Fork
    Aethos 2 FACT 10r Carbon, 12x100mm thru-axle, flat-mount disc
  • Saddle
    Body Geometry Power Expert
  • Seatpost
    Body Geometry Power Expert
  • Handlebars
    Roval Alpinist Carbon Handlebar, 125mm drop, 75mm reach
  • Stem
    Specialized Pro SL, alloy, 4-bolt
  • Seat Binder
    Specialized Alloy, 30mm
  • Tape
    Supacaz Super Sticky Kush
  • Front Brake
    Shimano Ultegra BR-R8170 Hydraulic Brake
  • Rear Brake
    Shimano Ultegra BR-R8170 Hydraulic Brake
  • Chain
    Shimano XT M8100, 12-speed w/ quick link
  • Cassette
    Shimano Ultegra, 12-speed, 11-30t
  • Bottom Bracket
    Shimano Threaded BSA BB
  • Shift Levers
    Shimano Ultegra Di2 R8170, hydraulic disc
  • Front Derailleur
    Shimano Ultegra Di2 R8150, braze-on
  • Rear Derailleur
    Shimano Ultegra Di2 R8150, 12-speed
  • Crankset
    Shimano Ultegra R8100, 52/36t
  • Inner Tubes
    700x20-28, 48mm Presta Valve
  • Front Tyre
    S-Works Turbo, 700x28
  • Rear Tyre
    S-Works Turbo, 700x28
  • Front Wheel
    Roval C38, 21mm internal width carbon rim
  • Rear Wheel
    Roval C38, 21mm internal width carbon rim
  • Weight
    7.12 kg (15 lb, 11.2 oz), tubeless
  • Weight Size
    56cm
As with any product, specification is subject to change without prior notification. You are advised to confirm current specification before buying. Please note that this bike does not come with pedals.
Sizing Information

SIZING

Size in ft5'1" - 5'4"5'4" - 5'7"5'7" - 5'9"5'9" - 5'11"5'11" - 6'2"6'2" - 6'5"
Size in cm155 - 163cm163 - 170cm170- 175cm175 - 180cm180 - 188cm188 - 196cm
Bike Size495254565861

GEOMETRY

Size49cm52cm54cm56cm58cm61cm
BB Drop76.5mm76.5mm75mm75mm73.5mm73.5mm
BB Height265.5mm265.5mm267mm267mm268.5mm268.5mm
Bike Standover Height719mm737mm759mm779mm805mm834mm
Chainstay Length410mm410mm410mm410mm410mm410mm
Fork Length, Full372mm372mm372mm372mm372mm372mm
Fork Rake/Offset50mm50mm50mm47mm47mm47mm
Front Centre581mm584mm594mm599mm614mm621mm
Head Tube Angle71.4°72.1°72.5°73°73°73.5°
Head Tube Length114mm128mm150mm169mm198mm218mm
Reach373mm377mm384mm391mm398mm404mm
Seat Tube Angle75.5°74.5°74°74°74°74°
Seat Tube Length450mm470mm490mm510mm535mm570mm
Stack522mm538mm559mm580mm606mm627mm
Top Tube Length, Horizontal508mm526mm544mm557mm572mm584mm
Trail62mm58mm55mm55mm55mm52mm
Wheelbase978mm981mm992mm998mm1013mm1020mm
Crank Length165mm170mm172.5mm172.5mm175mm175mm
Handlebar Width380mm400mm400mm420mm420mm440mm
Stem Length80mm90mm100mm100mm110mm110mm
Saddle Width155mm155mm143mm143mm143mm143mm
Seatpost Length300mm300mm360mm360mm360mm360mm
Professional Opinion
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