Specialized S-Works Aethos 2 Carbon Frameset 2026

At 595 g, the Aethos 2 frameset is the lightest production road frame in existence. It is not about racing regulations or weight records but about achieving the purest ride possible.

Flow State Design

Developed from insights into how frames behave under load, Flow State Design shapes tubes to optimise energy flow. This approach reduces material, removes stiffness layers, and creates a frame that is lighter, stronger, and more responsive.

Aethos 2 Geometry for More Riders

Refined using over 100,000 Body Geometry fits, the Aethos 2 geometry provides more comfort, confidence, and control. A taller stack, longer wheelbase, and slacker head tube deliver stability and precision handling.

Tyre Clearance Without Compromise

With space for 35 mm tyres, the frameset offers comfort and versatility while retaining its benchmark lightness. Each carbon ply was meticulously adjusted to maintain the world’s lightest disc road frame.

Strength Beyond Numbers

Though light, the Aethos 2 is built to endure. Rigorous testing proves its durability, combining low weight with structural resilience for lasting performance.

Compatibility

The frameset works with round 27.2 mm seatposts, standard 1 1/8” bar and stem combinations, and includes a custom UDH hanger for reliability and clean aesthetics.