Argon 18 Nitrogen Pro Dura-Ace Di2 Road Bike The Argon 18 Nitrogen Pro Dura-Ace Di2 Road Bike is the fastest road bike the brand has ever created, developed as a complete system to maximise speed, fit, and ride quality. Designed for real-world conditions, it integrates aerodynamic frame shaping, modern geometry, flexible rider fit, and world-class components into one high-performance package. The result is a road bike that delivers exceptional speed, lightness, and responsiveness while maintaining the renowned ride quality of Argon 18. Nitrogen Pro Frame and Design The Nitrogen Pro is engineered for optimal aerodynamics and rider efficiency. Its geometry ensures a race-ready position while maintaining comfort for long days on the road. The frame design emphasises speed and control, with every detail optimised for maximum performance. Argon 18 Nitrogen Pro Performance Details Each Nitrogen model comes equipped with specially designed bottle cages that follow an airflow concept inspired by automotive engineering, further improving aerodynamic performance. Argon 18 ATTEN Technology ATTEN, Argon 18’s advanced technology division, drives innovation across the Nitrogen platform. Every ATTEN product is engineered with a clear performance goal, addressing gaps in the market to redefine what is possible in bicycle performance. Argon 18 ATTEN Aero Handlebar The bike features the custom ATTEN CHB-01 Aero Handlebar, developed to improve leading-edge aerodynamics while enhancing rider positioning. This integrated component is part of Argon 18’s system-based approach, ensuring frame and cockpit work seamlessly together to reduce drag and improve efficiency.