Gallium: a bike that will take you straight to the top

A benchmark for comfort, stability and manoeuvrability, the Gallium is famous for its flawless handling, whether you are on the starting line, attacking a descent or climbing to the top. Responsive, agile and accurate, this bike will have you at your cruising speed in no time at all. The Gallium is made from a specially designed mould to maximize overall stiffness and features both an oversized bottom bracket and headtube. It is also equipped with our 3D System for more positioning options and superior stiffness.

Better handling, maximum transfer of power and superlight: power has never been so comfortable.

Whether climbing, sprinting or on a breakaway, the Gallium offers dramatic and flawless acceleration.
Gervais Rioux, Founder and President of Argon 18


Perfect for all types of roads

This frameset provides quick starts, remarkable downhill stability and exceptional handling in curves

Threaded 3D System

Offers three head tube heights for every frame size without compromising any rigidity; system preserves 5% and 11% more incremental frontal rigidity vs. standard spacers when the handlebar is set at 15mm and 25mm, respectively

Reversible ASP-6100 seat post

Features tailored front/rear positioning (from -15mm to -25mm)

Argon Fit System (AFS) geometry

Makes it easy for riders of all shapes and sizes to find the perfect position

Size-specific geometry

Well balanced ergonomic fit for every frame in every size

UCI approved

Frame and fork are approved by the Union Cycliste Internationale

Optimal Balance

Winning combination of power, lightness and rigidity for riders of all shapes and sizes

  • Sizing and Characteristics

    Seat post

    (31.6mm argon 18 asp-6000 carbon seat post, included)

    Seat post diameter


    Seat post clamp


    Variable offset of 15mm or 20mm

    Bottom bracket



    FSA model 62 + 3D (bearing 1” 1/4 [top] and 1” 1/2 [bottom]), FSA TH-881-1 compressor included

    Removable and adjustable front derailleur hanger compatible with compact and oval chainrings

    Forged dropouts with replaceable rear derailleur hanger

    Maximum tire size



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