The S-Works Aethos 2 is the lightest production road frame in the world at just 595 grams. Built by breaking the rules of racing, it delivers pure road riding bliss and is engineered to disappear beneath you during rides. The frame is impossibly responsive, supple, and sublime. It now features increased tire clearance and data-based fit-enhancing geometry to bring that transcendent ride feel to more riders than ever. Aethos 2 breaks the rules in pursuit of the perfect ride for more riders.

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 0.5° 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

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