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. Use - Performance Road Riding Frameset - 705g FACT 10r Frame / FACT 10r Fork Fit - Performance Endurance Cockpit and Wheels - Roval Alpinist bar Pro SL stem C38 wheels Drivetrain - Shimano Ultegra Di2 Weight - 7.12kg 56cm So Light It’s a Crime The Lightest Road Bike In Its Class Thanks to Flow State Design Aethos began with a moment of human insight: frames “breath” under load. That subtle rhythm revealed how force moved. We fed this into our supercomputer evolving tubes into sculpted forms. Shape itself delivered stiffness. The result wasn’t just the lightest road bike in its class and a more perfect ride it was a new way of making bikes - Flow State Design. Geometry and Fit Perfected for More Riders Decades of Body Geometry data now tuned into a fit that works for more riders than ever. We refined the fit and geometry using data from over 100000 Body Geometry fits to make long days in the mountains feel even better. Climb faster. Descend harder. Ride longer. You get precise handling in a more versatile and confidence-inspiring package. More Versatility. More Clearance. No Compromise. No Gram was Safe from Our Scalpel Aethos 2 clears 35 mm tires with ease. That means smoother faster rides more grip and more roads. That kind of upgrade usually comes at a cost. Not here. We didn’t just create our most optimized layup ever we re-engineered every detail. No gram was safe from the Specialized Science Club’s obsession.   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 Seat Binder Specialized Alloy 30mm Stem Specialized Pro SL alloy 4-bolt Tape Supacaz Super Sticky Kush Handlebars Roval Alpinist Carbon Handlebar 125mm drop 75mm reach SeatPost Roval Alpinist Carbon Seatpost Saddle Body Geometry Power Expert Front Brake Shimano Ultegra BR-R8170 Hydraulic Brake Rear Brake Shimano Ultegra BR-R8170 Hydraulic Brake Rear Derailleur Shimano Ultegra Di2 R8150 12-speed Front Derailleur Shimano Ultegra Di2 R8150 braze-on Shift Levers Shimano Ultegra Di2 R8170 hydraulic disc Cassette Shimano Ultegra 12-speed 11-30t Chain Shimano XT M8100 12-speed w/ quick link Crankset Shimano Ultegra R8100 52/36t Chainrings Narrow Wide Steel 42T Bottom Bracket Shimano Threaded BSA BB Pedals N/A Front Wheel Roval C38 21mm internal width carbon rim Rear Wheel Roval C38 21mm internal width carbon rim Front Hub n/a Rear Hub n/a Spokes DT Swiss Aerolite spokes Front Tire S-Works Turbo 700x28 Rear Tire S-Works Turbo 700x28 Inner Tubes 700x20-28 48mm Presta Valve Weight Size 56 - 7.12 kg 15 lb 11.2 oz tubeless * Weights based on production painted frames as pictured. Actual weights will vary based on colourway frame size and component variation. Specifications are subject to change without notice. As with any product specification is subject to change without prior notification. You are advised to confirm current specification before buying.