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The lightest production bike in its class in pursuit of the perfect ride for more riders.
The lightest production bike in its class in pursuit of the perfect ride for more riders.
Specialized

Specialized Aethos 2 Pro Shimano Ultegra Di2 Race Bike in Shadow Silver

$8,500.00
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Specialized Aethos 2 Pro Shimano Ultegra Di2 Race Bike in Shadow Silver

Season:2026

Brand:Specialized

Code:42791555446309

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.

Features:

  • Use
    Performance Road Riding
  • Frameset
    705g FACT 10r Frame / FACT 10r Fork
  • Fit
    Performance Endurance
  • Cockpit & Wheels
    Roval Alpinist Integrated Cockpit II and CL II wheels
  • Drivetrain
    Shimano Ultegra Di2
  • Weight
    6.73kg (56cm)
Technical Information
  • Frame
    Aethos 2 FACT 10r Carbon, Rider First Engineered™, Threaded BB, Hidden Cable Routing, 12x142mm thru-axle, flat-mount disk
  • Fork
    Aethos 2 FACT 10r Carbon, 12x100mm thru-axle, flat-mount disk
  • Front brake
    Shimano Ultegra BR-R8170, hydraulic disk
  • Rear brake
    Shimano Ultegra BR-R8170, hydraulic disk
  • Shift levers
    Shimano Ultegra Di2 R8170, hydraulic disk
  • 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 M8100, 12-speed w/ quick link
  • Crankset
    Shimano Ultegra R8100 with 4iiii Precision 3+ single-sided Power Meter, 52/36t
  • Bottom bracket
    Shimano Threaded BSA BB
  • Front tire
    S-Works Turbo TLR Race Tire, 700x28c
  • Front wheel
    Roval Alpinist CL II, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, DT for Roval 350 hub, DT Swiss Aerolite spokes, Tubeless Ready
  • Rear tire
    S-Works Turbo TLR Race Tire, 700x28c
  • Rear wheel
    Roval Alpinist CL II, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, DT for Roval 350 hub, DT Swiss Aerolite spokes, Tubeless Ready
  • Inner tubes
    700x25-35, 50mm Presta Valve, TPU
  • Handlebars
    Roval Alpinist Cockpit II, Integrated Bar/Stem
  • Tape
    Supacaz Super Sticky Kush
  • Saddle
    Power Pro Mirror, Hollow Ti rails
  • Seatpost
    Roval Alpinist Carbon Seatpost
  • Seat binder
    Specialized Alloy, 30mm
  • Weight
    6.73 kg (14 lb, 13.4 oz), tubeless
  • Weight size
    56
Sizing Information
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