2024 Specialized Aethos Pro - Shimano Ultegra Di2

• 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, we’ve 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 we’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 we’ve 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 fiber, we 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. We’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

Drivetrain

• Chainrings: 52/36T
• Cassette: Shimano Ultegra, 12-speed, 11-30t
• Bottom Bracket: Shimano Threaded BSA BB
• Rear Derailleur: Shimano Ultegra Di2 R8150, 12-speed
• Crankset: Shimano Ultegra R8100 with 4iiiis Power Meter
• Front Derailleur: Shimano Ultegra Di2 R8150, braze-on
• Shift Levers: Shimano Ultegra Di2 R8170, hydraulic disc
• Chain: Shimano M8100, 12-speed w/ quick link

Weight

• Weight Size: 56
• Weight: 6.78kg (14 lb, 15.2 oz)

Cockpit

• Saddle: Body Geometry Power Pro, hollow titanium rails
• SeatPost: Roval Alpinist Carbon Seatpost
• Handlebars: S-Works Short & Shallow, 125mm Drop, 75mm Reach w/Di2 Hole
• Seat Binder: Specialized Alloy, 30mm
• Stem: Specialized Pro SL, alloy, 4-bolt
• Tape: Supacaz Super Sticky Kush

Wheels & Tires

• 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 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: 700x20-28, 48mm Presta Valve
• Front Tire: S-works Turbo 2BR, 700x28mm
• Rear Tire: S-works Turbo 2BR, 700x28mm

Suspension

• Fork: FACT Carbon, 12x100mm thru-axle, flat-mount disc

Frameset

• Frame: Aethos FACT 10r Carbon, Rider First Engineered™, Threaded BB, 12x142mm thru-axle, flat-mount disc

Brakes

• Front Brake: Shimano Ultegra R8170, hydraulic disc
• Rear Brake: Shimano Ultegra R8170, hydraulic disc