Stan's Iron Cross Rims are their answer to the mud and madness that is cyclocross. Stan's renowned tubeless system and Beat Seat Technology provide lower tire pressures, more volume, and superior cornering traction. These super low-profile, disc-only rims feature a semi-aero profile and low weight to help you sprint out of the corners and gap the pack.
Stan's NoTubes BST design creates a tight tubeless seal between the rim wall and tire bead. The inner rim wall is the same size and shape as the tire bead. It's also shorter, which increases the volume of the tire.