The Specialized S-Works Aethos Frameset is an ultralight road frame built for climbing efficiency and ride comfort. Its Rider-First Engineered™ FACT 12r carbon layup delivers consistent stiffness and compliance across all sizes. The slender, ergonomically shaped tubing and minimalist aesthetic combine with fully internal cable routing and flat-mount disc brake compatibility for a clean, aerodynamic package.

• Frame material: FACT 12r carbon with Rider-First Engineered™ layup

• Frame weight: approximately 585 g (54 cm)

• Fork: FACT carbon, tapered steerer, flat-mount disc brake

• Bottom bracket: OSBB 68 mm English threaded

• Cable routing: fully internal for mechanical and electronic groupsets

• Tire clearance: up to 32 mm road tires

• Hardware: direct-mount front derailleur mount, thru-axle skewers included

• Geometry: race-oriented with endurance comfort (head tube angle ~73.5°, seat tube angle ~74°)