Length
Stack

Developed in collaboration with Aus Cycling and Cycling Canada for the Paris 2024 Olympic Games.

Optimised stiffness-to-weight ratio to achieve the best possible direct mount cockpit under high-intensity accelerations. Furthermore, an in-depth aerodynamic study was undertaken to ensure airflow around the leading edge of the stem and headtube junction maintained a fluid and attached airflow.

© The intellectual property for this product is owned by Velobike Innovation Limited. All rights reserved.

Technical Specifications
  • Compatible with the Argon18 Electron Pro (Rio and TKO) Sprint and Pursuit Framesets
  • UCI Legal
  • JKA certified for Japanese's Keirin Racing 
  • ISO 4210-5:2014 certified (tested to 2x the ISO requirements)
  • Aero design developed using CFD software
  • Bar clamp diameter: 31.8mm
  • >Bar clamp width: 49mm
  • Recommended to use copper grease on screw threads (grease not included)
  • Direct-mount screws are sold separately
  • New Zealand FernMark licensed
Geometry

Use the Velobike Altias Stem - Argon18 User Manual & Geometry Guide to select the correct stem size for your requirements.

The user manual includes:

  • Reach and stack dimensions
  • Handlebar reach limits (to 100mm in front of the axle)
  • Stem weights
  • Direct mount bolt length requirements 
  • Installation instructions
  • Installation torque specifications
  • Spacer heights and their effect on reach and stack dimensions
Argon Altias Stem
What's In The Box
  • 1x stem (of selected size)
  • 1x faceplate
  • 4x faceplate screws
Spare Parts & Extra Accessories
Altias Argon18 Stem

Discover Something Else