The Argon 18 Sum Shimano Ultegra Di2 delivers aerodynamic performance with precise electronic shifting. Built on the same haunched aero frame as other Sum models, it features sculpted tubing, hourglass headtube, and compliance-balanced design. The Shimano Ultegra Di2 2×12 drivetrain provides smooth, responsive gear changes. Paired with aero wheels and properly matched tires, this build balances race capability and everyday usability. Internal routing and integration keep the design sleek and drag minimal. It’s an ideal option for riders who want strong component performance in a refined aero package.

This specifications are from the information the brand releases and only apply to stock bicycles, build ups´ specifications will vary according to the components the buyer chooses.