The Specialized S-Works Aethos promises three things exceptional light weight, perfectly balanced ride characteristics and undeniable style.Designed with the perfect combination of ultimate ride feel, light weight, and style from accelerating up steep pitches and passes to 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, subtly altering 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 Specialized have 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.With Shimano's ultimate race ready electronic Dura Ace Di2 Drivetrain delivering clean, crisp shifts and Roval’s Alpinist wheels mated to DT Swiss 350 hubs leaves a super smooth and no-fuss build that delivers, mile after mile.About the Aethos FrameA featherweight frame is useless without confidence inspiring ride characteristics, which is why the Aethos has been developed to have the perfect balance of front and rear stiffness combined with exceptional ride quality. By studying the flexing and breathing of carbon fiber, the tech's at Specialized HQ were able to discover groundbreaking findings about how forces flow through frames. Just a few pedal strokes and you’ll realize this sublime ride that sets a whole new standard.Every detail, from the derailleur hangers to the fork expander plug have been designed with style, weight, and durability in mind. It's also spec’d with Roval’s all-new Alpinist carbon seatpost and wheels, further saving weight and improving ride characteristics. Everything in pursuit for the perfect ride.Aethos: Billions of calculations in the pursuit of one thing the perfect ride.The 2022 Specialized Aethos Pro 2022 Features:Frameset: FACT Carbon 12r Carbon Fibre, 12x142mm rear axle, Theaded BB, Flat mount disc.Drivetrain: Shimano Dura Ace Di2 R9270 12 Speed electronic shifting.Brakeset: Shimano Dura Ace Di2 R9270 Hydraulic Disc.Wheelset: Roval Alpinist CLX, Roval AFD hub, 21h/24h Disc Hubs, DT Swiss Aerolite spokes.