Aethos Pro - Shimano Ultegra Di2

The Aethos Pro delivers on three core promises: exceptional light weight, perfectly-balanced ride characteristics, and undeniable style. This bike is spec'd with Shimano's Ultegra Di2 for clean, crisp shifts paired with Roval's Alpinist wheels and DT Swiss 350 hubs, creating a no-fuss build that performs mile after mile. The Aethos frame has been designed with the perfect combination of ultimate ride feel, light weight, and style. Whether accelerating up steep pitches, descending technical descents, or enjoying all-day saddle comfort on long coffee rides, the Aethos delivers. By reinventing the traditional road shape and subtly altering these shapes, Specialized achieved massive gains in stiffness and balance without affecting weight or durability. The result is the lightest frame available, paired with an entirely new layup and process perfected over multiple decades. A featherweight frame requires confidence-inspiring ride characteristics, which is why the Aethos was developed with the perfect balance of front and rear stiffness combined with exceptional ride quality. By studying how carbon fiber flexes and breathes, Specialized discovered groundbreaking findings about how forces flow through frames. Just a few pedal strokes reveal this sublime ride sets a new standard. Every detail has been designed with style, weight, and durability in mind—from derailleur hangers to the fork expander plug. The bike is spec'd with Roval's all-new Alpinist carbon seatpost and wheels, further saving weight and improving ride characteristics. Everything is in pursuit of the perfect ride.