Industry Nine iRiX Headset- IS Upper Headset Spacer Contemporary bicycle frame designs are

Contemporary bicycle frame designs are incorporating larger diameter headtubes and forks with tapered-steerers to improve the bike’s front end stiffness

convenient plastic sleeve

With this tire

4 mm drive and non-drive

Designed to fit standard 64mm bolt-spaced 3-pack mounts

Industry Nine iRiX Headset- IS Upper Headset Spacer Contemporary bicycle frame designs areiRiX is a composite of Iris the Greek goddess and personification of the rainbow, and the Roman numeral IX. We feel this name embodies the core DNA of Industry Nine. iRiX accompanies our A35 and A318 stems bringing riders top of the line, fully customizable cockpit upgrades. iRiX bearing cups, top covers and top caps are machined, anodized and laser etched using US sourced 7075 aluminum in Asheville, NC USA. Available in every common modern size and