The Aethos line promises three things—exceptional light weight, perfectly balanced ride characteristics, and undeniable style—and this Aethos pro is no exception. Aethos: Billions of calculations in the pursuit of one thing—the perfect ride.

Spec’d with Shimano's Ultegra Di2 that delivers clean, crisp shifts and Roval’s Alpinist wheels mated to DT Swiss 350 hubs and you're left with a no-fuss build that delivers, mile after mile.

The Aethos frame has been designed with the perfect combination of ultimate ride feel, light weight, 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, Specialized 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 they’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 Specialized 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 fibre, they 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. They’ve also spec’d it with Roval’s all-new Alpinist carbon seatpost and wheels, further saving weight and improving ride characteristics. Everything in pursuit for the perfect ride.

Key Features & Benefits:

  • Fact 10r Carbon frame:Lightweight and lively for the best all-round road bike ever designed.
  • Shimano Hydraulic disc brakes:Stop faster, by spending less time on the brakes your average speed will increase for no extra effort.
  • Shimano Ultegra Di2 24 speed groupset:Precise and reliable electronic shifting with a wide range of gears for any climb or descent.

Full Specification:

  • Frame:Aethos FACT 10R Carbon, Rider First Engineered™, Threaded BB, 12x142mm thru-axle, flat-mount disc
  • Fork:FACT Carbon, 12x100mm thru-axle, flat-mount disc
  • Number of Gears:24
  • Gear Shifters:Shimano Ultegra R8170, hydraulic disc
  • Chainset:Shimano Ultegra R81000
  • Rear Cassette:Shimano Ultegra, 12-speed, 11-30t
  • Chain:Shimano M8100, 12-speed w/ quick link
  • Front Derailleur:Shimano Ultegra R8150, braze-on
  • Rear Derailleur:Shimano Ultegra R8150, 12-speed
  • Bottom Bracket:Shimano Threaded BSA BB
  • Pedals:Not supplied:Shop pedals here
  • Rims:Roval Alpinist CL, Tubeless, 21mm internal width carbon rim, 33mm depth, Wind Tunnel Engineered
  • Front Hub:DT for Roval 350 hub, DT Swiss Aerolite spokes
  • Rear Hub:DT for Roval 350 hub, DT Swiss Aerolite spokes
  • Front Tyre:S-works Turbo 2BR, 700x28mm
  • Rear Tyre:S-works Turbo 2BR, 700x28mm
  • Brakes:Shimano Ultegra R8170, hydraulic disc
  • Handlebars:S-Works Short & Shallow, 125mm Drop, 75mm Reach w/Di2 Hole
  • Handlebar Tape:Supacaz Super Sticky Kush
  • Headset:N/A
  • Stem:Specialized Pro SL, alloy, 4-bolt
  • Saddle:Body Geometry Power Pro, hollow titanium rails
  • Seatpost:Roval Alpinist Carbon Seatpost
  • Accessories:Shimano 105 Di2 Charger
  • Weight:6.93kg (15 lb, 4.4 oz)
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How it works: Pay in 12 Instalments
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Specialized Aethos Pro Ultegra Di2 Road Bike 2023
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    How it works: Pay in 12 Instalments
    • Shop today and pay in 12 monthly instalments through salary sacrifice.
    • Prices shown are the expected reduction in take home pay after taxes.
    • The order will be supplied by Brompton Bicycle Retail Limited.
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