What do you get when you take 160g out of the already light Argon 18 Gallium? You get the impressively light Gallium Pro, now with a 790g frame weight. By changing the carbon layup and thining out the chain stays Argon we able to lighten up the frame while still keeping the bike stiff and fast like the original. Even with a super light frame, Argon 18 is still able to offer their 3D headtube system to tailor the headtube length to your fit. Just what is the 3D headtube system? Think of it as three different fits built into one single bike.
Rather than offer 3 different geometries for the Gallium Pro, Argon offers them all in a transforming design. Users can tailor the effective head tube height to their needs by changing out the 3D spacer that add 15 or 25mm to the total height of the head tube. Argon claims this design not only offers more fit options, but preserves stiffness at the handlebar by 5% at 15mm and 11% at 25mm compared to just headset spacers. Inside the 3D system is a tapered steerer tube for the GA31 Fork.
The stays have been thinned drastically on the Pro as part of the HDS or Horizontal Dual System – essentially marketing speak for drawing a diagonal line from the head tube to the rear dropout and thinking of the bike in terms of the upper half built for comfort and the bottom half built for power and speed.
As such, the frame uses a BB86 bottom bracket with a downtube that’s almost as wide as the BB shell and squared chainstays for maximum power transfer. The Gallium Pro is set up to run mechanical or electronic drivetrains and requires no additional parts to switch.
The end result is shown with a small frame, full Dura Ace build including the wheels at 14.18 lbs, or 6.43kg.
