Specialized S-Works Aethos 2 Di2

The Specialized S-Works Aethos 2 Di2 represents the lightest production road frame in its class, engineered not merely for minimal weight but to deliver pure road riding bliss. With a 595-gram FACT 12r frame, this bike is built to disappear beneath riders through responsive handling, supple compliance, and sublime ride quality. Enhanced with increased tire clearance and data-based fit geometry refined from over 100,000 Body Geometry fits, the S-Works Aethos 2 brings transcendent ride feel to cyclists who demand the absolute best.

The revolutionary Flow State Design philosophy originated from engineers observing how frames "breathe" under load, a subtle rhythmic pattern that reveals force movement through the structure. This insight fed into Specialized's supercomputer alongside decades of mechanical testing data, evolving traditional round tubes into precisely sculpted forms optimized for energy flow. By refining shape rather than adding material layers, the design eliminates traditional carbon stiffness layers while improving ride quality and structural integrity.

The refined geometry increases the stack by 15mm to reduce pressure on hands, neck, and shoulders during extended rides, while a 7mm longer wheelbase enhances descending confidence. A 0.5° slacker headtube angle creates nimble yet intuitive handling that responds precisely to rider input. Despite accommodating 35mm tires for improved comfort, grip, and versatility, the S-Works Aethos 2 maintains its class-leading weight through meticulous optimization of every component.

Built for riders who value pure road riding experience over racing conventions, this S-Works build pairs the 595-gram frame with Shimano's flagship Dura-Ace 12-speed electronic shifting and 4iiii Precision Pro dual-sided power meter. The Roval Alpinist CLX III wheelset with S-Works Turbo TLR tires completes the package that represents the highest expression of Specialized's engineering capabilities.

Key Features

• Frame: FACT 12r Carbon with Flow State Design (595g)
• Drivetrain: Shimano Dura-Ace 12-Speed with 4iiii Precision Pro Dual-Sided Power Meter (52/36t)
• Wheelset: Roval Alpinist CLX III with S-Works Turbo TLR Race Tires