The S-Works Aethos 2 is built by breaking the rules of racing to deliver pure road riding bliss. It is engineered to disappear beneath you, with an impossibly responsive, supple, and sublime ride feel. 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. So Light, It's a Crime 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. The shape itself delivered stiffness, delivering UCI illegal 5.9kg builds and more responsiveness. The result wasn't just a more perfect ride, it was a new way of making bikes-Flow State Design. Technology is Our Tradition Flow State Design: Where Specialized Science Club Meets Machine Intelligence 595 grams FACT 12r Frames Lighter than the water bottle in your cage thanks to our most optimized layup ever. We'll Never Make a Bike the Same Way Aethos redefined how we build bikes. Crux and Tarmac SL8 followed its lead. Rider First Engineered Regardless of the bike's size, every rider gets the famed Aethos ride quality. Geometry and Fit Perfected for More Riders We refined the fit and geometry using data from over 100,000 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. New Fit for More Comfort and Performance We increased the stack by 15mm to help take pressure off your hands, neck and shoulders. More Confidence, More Stability What goes up, must come down. A 7mm longer wheelbase for confidence to push the pace on descents. Carve the Corners with Precision A 0.5deg Slacker Headtube creates nimble but intuitive handling. Aethos 2 must be reading your mind. Ride 'in' the bike, not 'on' the bike. With a 3mm lower BB height is optimized for higher volume road tires and a more connected feeling to the bike and road. More Versatility. More Clearance. No Compromise. 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. Saddle Rail Clamp 9 Grams Saved Bottom Bracket Shell 6 Grams Saved Brake Mounts 2 Grams Saved Lightweight UDH 2 Grams Saved The Fastest Way to the Top The Alpinist II cockpit and CLX III wheels are purpose-built to elevate Aethos 2, while delivering significant weight savings. Alpinist CLX III Wheels Paired with 1,131g CLX III wheels-featuring lighter, stronger composite spokes -the ride feels faster, smoother, and more refined in every way. Alpinist II Cockpit At just 270g, the cockpit blends ergonomic shaping-oval tops, flared drops, and 28% more damping-with clean internal routing and classic compatibility.