Aethos Frameset

The Aethos frameset represents a new breed of road bike design, combining exceptional lightweight construction with perfectly balanced ride characteristics and distinctive style. Through billions of calculations, Specialized has engineered a frame that delivers the perfect ride across all conditions—from steep climbs and technical descents to all-day comfort on long rides. The frame has been redesigned with subtle alterations to the traditional road shape that deliver massive gains in stiffness and balance without compromising weight or durability. Using an entirely new layup and manufacturing process perfected over multiple decades, the Aethos achieves remarkable lightness at just 585 grams for the S-Works version in size 56cm. This featherweight construction is paired with a frame that has the perfect balance of front and rear stiffness combined with exceptional ride quality. Specialized studied how forces flow through carbon fiber frames to develop the Aethos's sublime ride characteristics, which set a new standard for confidence-inspiring performance. Every detail—from derailleur hangers to the fork expander plug—has been designed with style, weight, and durability in mind, creating the perfect canvas for building your dream ride.