Aethos Pro - Shimano Ultegra Di2

The Aethos Pro represents the pinnacle of lightweight road bike design, combining exceptional light weight, perfectly-balanced ride characteristics, and undeniable style. Billions of calculations have gone into the pursuit of the perfect ride, resulting in a bike that excels whether you're accelerating up steep pitches, descending technical descents, or enjoying all-day saddle comfort on the longest coffee rides. The Aethos frame has been engineered with a perfect combination of ultimate ride feel, light weight, and style. By reinventing the traditional road shape found on bikes of the past, Specialized has subtly altered these shapes to deliver massive gains in stiffness and balance, all without affecting weight or durability. Paired with an entirely new layup and process perfected over multiple decades, the Aethos delivers the lightest frame available at just 585 grams in size 56cm S-Works configuration. A featherweight frame requires confidence-inspiring ride characteristics, which is why the Aethos has been developed with the perfect balance of front and rear stiffness combined with exceptional ride quality. By studying the flexing and breathing of carbon fiber, groundbreaking findings about how forces flow through frames have been discovered, resulting in a sublime ride that sets a new standard. The bike is spec'd with Shimano's Ultegra Di2 for clean, crisp shifts and Roval's Alpinist wheels mated to DT Swiss 350 hubs, delivering a no-fuss build that performs mile after mile. Every detail, from the derailleur hangers to the fork expander plug, has been designed with style, weight, and durability in mind. The Roval all-new Alpinist carbon seatpost and wheels further save weight and improve ride characteristics.