2025 ARGON 18 SUM PRO ULTEGRA DI2 - ROAD BIKE

The Argon 18 SUM Pro Ultegra Di2 Road Bike delivers unmatched performance on climbs and sprints, challenging you to decide just how much mercy to show your rivals.

Designed with a rider-focused approach, the frame achieves the perfect balance of responsiveness and stability, providing a ride quality that outshines most aero frames. The Sum’s precision-engineered layup maximises aerodynamics while reducing weight. Its advanced aero-profile tube shapes eliminate unnecessary material, ensuring optimal power transfer for peak efficiency.

3D System

Argon 18's 3D Technology delivers a tailored fit without compromising safety, steerer stiffness, or aesthetics.

Road Race Geometry

Specifically engineered for razor-sharp reflexes and precision handling, this geometry caters to racers at every level.

Topological Compliance System

Through a proprietary design process, this system enhances vertical compliance and minimises road vibrations while maintaining maximum stiffness. Each TCS-equipped bike undergoes comprehensive analysis to optimise frame topology and carbon layup.

Argon Fit System

Argon 18’s size-specific geometries ensure every rider enjoys optimal performance and positioning, leaving no cyclist behind.

Elite Level Layup

Built with the same meticulous attention to detail as Pro-level models, Argon 18’s Elite-level bikes offer superior performance for the most discerning riders.

Technical Specification