The AXIS 4.0 SCS Disc wheelset is performance packed, with the patented SCS hub system for a proper chainline on short chainstay performance road and cyclocross bikes. The tubeless-ready (with tape and sealant) rim has an internal rim width of 21mm, providing a better tire profile for enhanced traction. This wheelset is built with 12mm thru-axle hubs for use on SCS thru-axle bikes.